When did Edward Troughton take on William Simms?
Edward Troughton took on William Simms as a partner in 1826. Notable Troughton instruments from this period include the Equatorial telescope at Armagh Observatory (1795), the Mural circle at Greenwich Royal Observatory (1812), and the Transit telescope at Greenwich Royal Observatory (1816).
How old is the Troughton and Simms theodolite?
A steel cased Theodolite mid 20th century believed to be British made, although reputedly captured from the Yokosuka naval base circa 1945, with a gun metal case, mounted on an adjustable steel base, 43 x 21.5 cm Troughton & Simms Theodolite on a timber tripod stand. Condition good, some tarnishing & age related wear.
What kind of instruments did Troughton and Simms make?
Troughton & Simms made several of the main instruments for Melbourne Observatory, including an 18 inch altazimuth used on the Geodetic Survey, portable transit instrument (circa 1850), zenith sector (1860), 4.5 inch equatorial telescope (1862), 8 inch equatorial telescope (1874), spectroscope (1877), and 8 inch transit instrument (1884).
When did Cooke Troughton and Simms become a limited company?
It became a limited company in 1915 and in 1922 it merged with T. Cooke & Sons to form Cooke, Troughton & Simms . The firm produced hundreds of astronomical instruments such as mural circles, transit circles, sextants, and other astronomical instruments for observatories around the world.
Edward Troughton took on William Simms as a partner in 1826. Notable Troughton instruments from this period include the Equatorial telescope at Armagh Observatory (1795), the Mural circle at Greenwich Royal Observatory (1812), and the Transit telescope at Greenwich Royal Observatory (1816).
A steel cased Theodolite mid 20th century believed to be British made, although reputedly captured from the Yokosuka naval base circa 1945, with a gun metal case, mounted on an adjustable steel base, 43 x 21.5 cm Troughton & Simms Theodolite on a timber tripod stand. Condition good, some tarnishing & age related wear.
Troughton & Simms made several of the main instruments for Melbourne Observatory, including an 18 inch altazimuth used on the Geodetic Survey, portable transit instrument (circa 1850), zenith sector (1860), 4.5 inch equatorial telescope (1862), 8 inch equatorial telescope (1874), spectroscope (1877), and 8 inch transit instrument (1884).
It became a limited company in 1915 and in 1922 it merged with T. Cooke & Sons to form Cooke, Troughton & Simms . The firm produced hundreds of astronomical instruments such as mural circles, transit circles, sextants, and other astronomical instruments for observatories around the world.
