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Compass design changed little between the 16th and mid-18th centuries. Compass cards were hand-painted and often very decorative. This one has...
Mariner's compass, c. 1850.
A mariner's compass, c. 1850, by the famous instrument maker E. J. Dent.
Mariner's compass in wooden box, c. 1849.
A mariner's compass in a wooden box. The card of this compass was replaced and is dated 1859. It is inscribed 'late Bradford, 99 Minories, London,...
Commissioned from Edward Troughton, with the optical parts by Peter and John Dollond, this 6-foot (1.8m) mural circle was first used in 1812. Owing...
The octant was developed in the early 1730s by John Hadley. The instrument enabled the observer to make more accurate measurements than had...
A portable brass reflecting telescope, with two eyepieces, one a later replacement, and folding tripod. The telescope can be dismantled and fitted...
Named in honor of Charles Boyle, Earl of Orrery, an orrery is an apparatus which illustrates, by the revolution of balls moved by wheelwork, the...
Octant, c. 1820.
An octant is an instrument used for measuring distances between objects, used in navigation and surveying. This octant was made by Joseph Hughes c...
Marine Cistern Barometer.
Negretti and Zambra were among the best-known London manufacturers of meteorological instruments by the late 19th century. This Meteorological Office...
Magnetic dip circle.
During the 19th century the Royal Observatory Greenwich became an important centre for measuring changes in terrestrial magnetism because of the way...
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