Very Rare Brass » prismatic

Very Rare Brass » prismatic https://veryrarebrass.com Sat, 30 May 2026 07:29:39 +0000 en-US hourly 1 https://wordpress.org/?v=4.1.1 Very Rare Prismatic Monocular 6×30 Of Total Solid Brass Of Ross Co Britain Of 1900 Ad Approximately https://veryrarebrass.com/very-rare-prismatic-monocular-6x30-of-total-solid-brass-of-ross-co-britain-of-1900-ad-approximately/ https://veryrarebrass.com/very-rare-prismatic-monocular-6x30-of-total-solid-brass-of-ross-co-britain-of-1900-ad-approximately/#comments Sun, 23 Jan 2022 05:39:04 +0000 https://veryrarebrass.com/very-rare-prismatic-monocular-6x30-of-total-solid-brass-of-ross-co-britain-of-1900-ad-approximately/ ]]> https://veryrarebrass.com/very-rare-prismatic-monocular-6x30-of-total-solid-brass-of-ross-co-britain-of-1900-ad-approximately/feed/ 0 Ex MOD /\ Stanley G150 Brass Prismatic Marching Compass Mils and Degrees https://veryrarebrass.com/ex-mod-stanley-g150-brass-prismatic-marching-compass-mils-and-degrees/ https://veryrarebrass.com/ex-mod-stanley-g150-brass-prismatic-marching-compass-mils-and-degrees/#comments Sat, 09 Oct 2021 21:03:54 +0000 http://veryrarebrass.com/ex-mod-stanley-g150-brass-prismatic-marching-compass-mils-and-degrees/

$Ex MOD /\ Stanley G150 Brass Prismatic Marching Compass Mils and Degrees$
Please choose which compass you want from the drop down above. NOTE: The only item we cannot guarantee is the radioactive tritium lights (glow in the dark) as these exhaust over time and we are unable to replace them. Please Read condition details below and study all pictures before purchasing. No`s 19,58,70, are in good all round condition No Bubbles in Fluid Calibrated in mils Study the pictures for exact condition. In Used condition Case hinge is slightly loose/Tritium light is missing from index ring No bubbles in. Fluid Calibrated in mils Study the pictures. L1A1 Very Rare model only put into production for a few months, has small bubble in the fluid clean all round condition. 58 and 37 pattern pouch`s as pictured. Round pouch are as pictured. “Leather pouch” you will receive 1 of the 6 pictured selected at random. We also have a full selection of spare parts for these compasses see our other listings. See newly listed items. Buyers outside these areas i. Highlands and Islands may be subject to a carriage premium. At the checkout we require a full postal address including postcode and a contact telephone number. The item “Ex MOD /\ Stanley G150 Brass Prismatic Marching Compass Mils and Degrees” is in sale since Friday, February 22, 2019. This item is in the category “Collectables\Militaria\Surplus/ Equipment\Field Gear”. The seller is “v83500″ and is located in worksop, Nottinghamshire. This item can be shipped to United Kingdom, Antigua and barbuda, Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Australia, United States, Bahrain, Canada, Japan, New Zealand, China, Israel, Hong Kong, Norway, Indonesia, Malaysia, Mexico, Singapore, South Korea, Switzerland, Taiwan, Thailand, Bangladesh, Belize, Bermuda, Bolivia, Barbados, Brunei darussalam, Cayman islands, Dominica, Egypt, Guernsey, Gibraltar, Guadeloupe, Grenada, French guiana, Iceland, Jersey, Jordan, Cambodia, Saint kitts and nevis, Saint lucia, Liechtenstein, Sri lanka, Macao, Monaco, Maldives, Montserrat, Martinique, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Turks and caicos islands, Aruba, Saudi arabia, South africa, United arab emirates, Ukraine, Chile, Bahamas, Colombia, Costa rica, Dominican republic, Guatemala, Honduras, Jamaica, Kuwait, Panama, Philippines, Qatar, El salvador, Trinidad and tobago, Uruguay, Russian federation.

Country/Region of Manufacture: United Kingdom
Country/ Organization: Great Britain
Issued/ Not-Issued: Issued
Featured Refinements: Stanley Prismatic Compass
Type: Compass
Service: Army
Era: 1945-Present

$Ex MOD /\ Stanley G150 Brass Prismatic Marching Compass Mils and Degrees$

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g150 with brass card

]]> https://veryrarebrass.com/ex-mod-stanley-g150-brass-prismatic-marching-compass-mils-and-degrees/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-8/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-8/#comments Tue, 12 Nov 2019 15:16:29 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-8/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_856 GS 7.0.20 (856). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Monday, November 4, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

]]> https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-8/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-7/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-7/#comments Sat, 12 Oct 2019 01:54:13 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-7/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_856 GS 7.0.20 (856). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Monday, October 7, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

]]> https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-7/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-6/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-6/#comments Sun, 22 Sep 2019 12:43:46 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-6/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_854 GS 7.0.18 (854). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Monday, September 9, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

]]> https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-6/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-5/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-5/#comments Mon, 22 Jul 2019 12:50:48 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-5/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_854 GS 7.0.18 (854). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Friday, July 19, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

]]> https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-5/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-4/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-4/#comments Tue, 14 May 2019 08:44:42 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-4/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_841 GS 7.0.16 (841). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Monday, May 13, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

]]> https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-4/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-3/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-3/#comments Sun, 12 May 2019 08:36:44 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-3/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_841 GS 7.0.16 (841). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Sunday, April 7, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

]]> https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-3/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-2/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-2/#comments Sun, 10 Mar 2019 23:02:41 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-2/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_841 GS 7.0.16 (841). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Friday, March 8, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

]]> https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass-2/feed/ 0 SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass/ https://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass/#comments Mon, 25 Feb 2019 05:34:31 +0000 http://veryrarebrass.com/schmalcalders-patent-prismatic-compass-c-1826-very-rare-georgian-antique-brass/

SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS. A rare and very beautiful Georgian compass, a Schmalcalder’s Patent prismatic, serial no. 2150 C, made in London c. The compass card is marked’Schmalcalder’s Patent, 399 Strand, London’. With a hand-drawn green compass card, lacquered brass case and lid, prism and vane sights, transit lock, and manual brake. His patent design of 1812, which introduced the idea of using an optical prism, combined with a sighting vane, to improve accuracy when taking bearings, is still in use today. Schmalcalder’s innovation was a development of the work of Henry Kater. In 1811 Kater developed a design using a mirror and sighting vane. His design was then manufactured by Thomas Jones. Schmalcalder, who also knew Thomas Jones, is believed to have seen Kater’s new compass at Jones’ premises, and this gave him the idea for his own prismatic version. Schmalcalder moved swiftly to have prototypes of his own design made by Jones, which he then went on to patent. Winning the race to patent his innovation, Schmalcalder’s compass completely eclipsed Kater’s earlier design. Schmalcalder continued in business until around 1840, with his design being used uncredited by many other makers, such as Simms, Barker, Jones, and Troughton after the patent expired in 1826. No doubt as a result of this, Schmalcalder fell on hard times, dying in poverty in 1843 and being buried in the Strand Union Workhouse cemetery. All Schmalcalder patent compasses have a serial number in the lid and on the base, with the ones from 82 The Strand having a letter’B’ as the prefix, and the ones from 399 The Strand having a letter’C’ prefix. (This compass has the serial number 2150, with the’C’ prefix). In very good, original condition, and full working order. The compass finds North very well. The glass, sighting vane, and prism are all in very good condition. There are some minor marks to the compass card. Both the manual brake and transit lock are working well. There is some wear to the original lacquered finish of the brass case. Dimensions: 72mm diameter 90mm inc. I have several other antique compasses listed at the moment. Please check out my other listings. _gsrx_vers_841 GS 7.0.16 (841). The item “SCHMALCALDERS PATENT PRISMATIC COMPASS c. 1826 VERY RARE GEORGIAN ANTIQUE BRASS” is in sale since Sunday, February 24, 2019. This item is in the category “Collectables\Scientific Collectables\Scientific Instruments\Other Scientific Instruments”. The seller is “coniston1980″ and is located in Lancashire. This item can be shipped worldwide.

Type: Scientific Instruments
Sub-Type: Compasses/ Dividers
Material: Wood
Period: 1800 to 1900
Country/Region of Manufacture: United Kingdom

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