Two foot geodetic theodolite, British, 1826-1828
1826-1828
Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight
1829
Portable transit instrument, with case and components
1840-1860
Two foot geodetic theodolite, 1826-1828
1826-1828
Prismatic magnetic compass, British, 1826-1876
1826-1876
Cambridge Observatory eight-foot mural circle
1832
Box type pocket sextant.
1845-1850
Frame micrometer no. 30 by Troughton and Simms
1826-1894
Large Vernier Calliper for Manufacturing Large Calibre Weapons, 1826-1867
1826
Altazimuth theodolite
1826-1916
Circular slide rule by Troughton and Simms
1877
Brass pillar-frame sextant.
1826-1870
Reflecting goniometer by Troughton and Simms
1901-1930
Altazimuth theodolite
1826-1916
28 inch level, by Troughton and Simms, with case
1801-1831
frame micrometer
1826-1894
Royal Society standard thermometer, 1826-1832
1826-1832
Tutton's goniometer, for cutting, grinding and polishing minerals, with case and components
1894
Split-lens eyepiece micrometer
1870-1874
Bearing compass
Brass clinometer
Station pointer
1911
Incomplete portable transit instrument by Troughton and Simms
1826-1851
Diamond-frame pattern sounding quintant.
1885-1895
Meirs type reflecting goniometer with complete adjustment
1893
bronze standard of Imperial and Metric length
1869
6 inch station pointer by Troughton and Simms
1801-1900
Brass standard 4 feet, in mahogany case
1826
Cyclograph for setting out railway curves, British, 1849
1849
Station pointer
1851-1900
Double sounding quintant.
1835-1845
Tubular 5-foot standard scale by Troughton and Simms
1833
Standard yard, in mahogany case
Velvet-lined burgandy leather box for dynameter with handwriten note
1790-1890
Eccentric wire-gauge
Brass dynameter
1790-1890
Two foot
Micrometers for large mural Circle
1832
Micrometers for large mural Circle
1832
Two foot
Bronze 3" End-Measure No. 81, with agate plugs
1844-1850
One of two cases for three prism spectroscope made by Troughton and Simms
1867
Object Glass for large mural Circle
1832
Case for brass pillar-frame sextant
1824-1851
Tutton's goniometer
1894
Collimator telescope
1860-1880
Surveying camera for photogrammetric outfit, 1901-1915
1901-1915
Box for bronze End-Standard yard
1844-1850
Case for photogrammetric outfit, 1901-1915
1901-1925
Part of circular instrument dividing engine.
circa 1845