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Barograph clock by Alexander Cumming

Time Measurement

1766

Celestial globe by George Adams

King George III

1766

Marine chronometer by John Arnold and Son, 1787-1799

Time Measurement

1787-1799

Part of Two foot geodetic theodolite, British, 1826-1828

Surveying

1826-1828

Six-part round section [screwed] 60-inch excise g

Mathematics

1821-1846

Campbell sunshine recorder bowl, 1891

Meteorology

1891

Prototype beam splitter for the Advanced Laser Interferometer Gravitational Wave Observatory (aLIGO)

Astronomy

2008 (prototype)

Gravity Probe B gyroscope rotor and housing

Space Technology

1992-1995

Positional filar micrometer by John Browning, Lond

Astronomy

1875-1900
Replacement glazed mahogany case for Shelton regulator clock with mounting bracket and grid iron pendulum. Made by the United States Coastal and Geodetic Survey in 1882.

Case for Shelton regulator clock

Time Measurement

1882
Movement for regulator clock with dead beat escapement, inverted grid iron pendulum with steel knife edge pivot on an agate plate and bubble level. Originally made by John Shelton, Shoe Lane, London, 1768-9, with later modifications.

Clock movement for Shelton regulator clock

Time Measurement

1768-1769

Anemometer parts for use with 30 ft mast, 1997.

Meteorology

1997

Complete set of smoked plattes, unused, for bathyt

Oceanography

Water volume measuring vessel. Used to measure the

Gas Industry

Azimuth mirror component

Navigation

1876-1879

Chronometer movement in brass cage

Time Measurement

1900-1910

Pocket watch winding key

Wellcome (general)

1853
Filar micrometer, part of refracting telescope by John Smeaton on equatorial mounting with stand [RAS No.7] . Presented to Royal Astronomical Society in 1845 by Mrs Sommerville to whom it was left by Mrs Dixon, Smeaton's daughter.

instrument component; filar micrometer

Astronomy

1770

Portable naked eye sighting instrument

Astronomy

1780

Divided object-glass micrometer by George Dollond,

Astronomy

1821-1857

Four-part square section [screwed] 48-inch excis

Mathematics

1821-1846

Case, with accessories for Powell and Lealand No.1 microscope, 1874

Microscopes

1874

Set of eyepieces, for 6-inch aperture refracting telescope, in mahogany box

Astronomy

1884

Accessories for two-day chronometer by John Arnold and Son

Time Measurement

Case, for 3-ft hand range-finder, from Hitler's yacht: 'Aviso Grille'

Optics

1933-1939

Fragment of stem of unidentified instrument

Classical & Medieval Medicine

199-500

Concave Thorp grating for diffraction

Optics
Two-day chronometer by John Arnold and Son, no.43/133. With inscription "Thos Prest August 10th 1792", scratched on great wheel, Prest was apprenticed to John Arnold and foreman to his son at Chigwell

Chronometer

Time Measurement

Electrical register for anemometer

Meteorology

1872

Dynamameter eyepiece micrometer

Astronomy

1820-1830

Brass filar micrometer for astronomical telescope,

Astronomy

1751-1773

Divided object-lens micrometer

Astronomy

1754-1757

Wooden box for Prof. William Thomson's fuel calorimeter

Heat

1886-1900

Wood piece from Regulator clock by Cope and Molyneux

Collection Unassigned

1822-1823

Flat-bottomed glass flask, associated with M. Berthelot

Experimental Chemistry

Crystal micrometer, one of three by George Dollond

Astronomy

1820-1830

Eyepiece, 6-inch focal length, from Huygen's aerial telescope

Astronomy

1686-1691

Six-fold 60-inch folding excise gauging rule by Jo

Mathematics

1821-1846

Tube for Symons barometer

Meteorology

1874

Ramsden's astronomical equatorial instrument, with 2-1/4 inch aperture and 18-inch focal length

Astronomy

1770-1780
Parts for Technicon Auto Analyser colorimeters

Parts for Technicon Auto Analyser colorimeters

Biochemistry

Berthelot-Mahler calorimeter

Heat

1889

Spherical glass lens for sunshine recorder, 1857

Meteorology

1857

Sunshine recorder spherical lens, 1923

Meteorology

1923

Swiss Chronograph Mechanism, 1860-1880

Time Measurement

1860-1880

Wood piece from bottom of the regulator clock by Cope and Molyneux

Collection Unassigned

1822-1823

Cage for chronometer movement

Time Measurement
Case for two-day chronometer by John Arnold and Son, no.43/133.

Case for chronometer

Time Measurement

Fishskin case for proportional compass

Mathematics

Chronometer: 'Arnold 488', in mahogany carrying case

Time Measurement

1810-1880