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Refracting telescope of 5.9-inch aperture, mounted on English type equatorial mounting with off-set lead counterweight

1829

Diamond- pattern frame sextant.

1835-1845

Circular slide rule by Troughton and Simms

1877

Portable transit instrument, with case and components

1840-1860

frame micrometer

1826-1894

Brass clinometer

Eccentric wire-gauge

Bronze 3" End-Measure No. 81, with agate plugs

1844-1850

Two foot

Large Vernier Calliper for Manufacturing Large Calibre Weapons, 1826-1867

1826

Diamond-frame pattern sounding quintant.

1885-1895

Refracting telescope with 5.9-inch aperture lens, brass tube and English type equatorial mounting and clockwork drive

1829

Brass dynameter

1790-1890

Two foot geodetic theodolite, 1826-1828

1826-1828

Box type pocket sextant.

1845-1850

Altazimuth theodolite

1826-1916

Double sounding quintant.

1835-1845

Standard yard, in mahogany case

Tutton's goniometer, for cutting, grinding and polishing minerals, with case and components

1894

Cambridge Observatory eight-foot mural circle

1832

Meirs type reflecting goniometer with complete adjustment

1893

Incomplete portable transit instrument by Troughton and Simms

1826-1851

Wooden brass measure

1871-1873

Bronze 6" End-Measure No. 80, with agate plugs

1844-1850

Two foot

Frame micrometer no. 30 by Troughton and Simms

1826-1894

Brass pillar-frame sextant.

1826-1870

Bearing compass

Folding clinometer, with conversion tables for gradient/angle and centigrade/F

1869

Split-lens eyepiece micrometer

1870-1874

28 inch level, by Troughton and Simms, with case

1801-1831

Station pointer

1911

6 inch station pointer by Troughton and Simms

1801-1900

Altazimuth theodolite

1826-1916

Prismatic magnetic compass, British, 1826-1876

1826-1876

Cyclograph for setting out railway curves, British, 1849

1849

Royal Society standard thermometer, 1826-1832

1826-1832

Station pointer

1851-1900

Reflecting goniometer by Troughton and Simms

1901-1930

Brass standard 4 feet, in mahogany case

1826

Box of wooden drawing curves by Troughton & Simms

1839-1915

Velvet-lined burgandy leather box for dynameter with handwriten note

1790-1890
Transit Telescope, 2-inch, brass, in fitted mahogany case, by Troughton & Simms, London, c1850, reputedly used at the London & North Western Railway's Crewe Works for aligning locomotive cylinders and frames.

Transit telescope by troughton & simms

1850
Theodolite, produced by Troughton & Simms, Great Western Railway, engraved GWR Divisional Engineers' Office, Gloucester no. 12, with box, tripod and two eye-pieces, repaired 1923.

Theodolite, Great Western Railway

1923 (repaired)
Collimator telescope, 1 1/2-inch aperture and 10-inch focal length, and mahogany case, by Troughton & Simms, London. Used for levelling and adjustment of a transit instrument.

Collimator telescope

1860-1880
Folding-arm brass protractor by Troughton & Simms, London, in wooden case, mid 19th century.

Folding-arm brass protractor by Troughton & Simms

1840-1860
Airy's Reflex Zenith Tube, 1851, made by Troughton and Simms

Airy's Reflex Zenith Tube

1851
Vertical repeating circle with stand of 8-inch diameter, with diagonal telescope and case (no key), by Troughton and Simms [RAS No. 39, Sheepshank No.13]. Presented to the Royal Astronomical Society in 1857 by Miss Anne Sheepshanks sister of the Rev. Richard Sheepshanks.

Vertical repeating circle with stand of 8-inch diameter

1824-1855
Ellipsograph, brass, in mahogany case with accessories, signed Troughton & Simms, London, mid 19th

Ellipsograph in mahogany case with accessories

1840-1860
Refracting telescope of 4.1-inch aperture on an English type equatorial mounting commissioned by Sir George Shuckburgh from Jesse Ramsden in 1781, though not completed until 1791. First installed at Shuckburgh's home at Shuckburgh Warwickshire, it was later given to the Royal Observatory, Greenwich in 1811 by Charles Jenkinson Shuckburgh's heir. The hour circle was re-divided by Troughton & Simms in 1860 but the stand proved too flimsy and was little used at Greenwich in later years.

Refracting telescope on equatorial mounting

1781-1791