Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Napier's Bones
1690
Compound microscope
1700
Orrery made by John Rowley for the Earl of Orrery
1712-1713
Wooden Acupuncture Model
1681
Tumbler, horn, with silver strip around rim, 1742
1742
Model 'Maximum machine', before 1753.
1740-1753
Demainbray's Irish low-backed cart model
1735-1754.
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Demainbray's convex lens
1750
Demainbray's syphon
1701-1752
Etching of an electrically powered garden
1755
Demainbray's polemoscope
1701-1752
Demainbray's speaking trumpet
1700-1752
Demainbray's hydrostatic paradox vessels
1735-1752
Demainbray's rat's tail crane model
1735-1753
Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Wandering hour watch by Sinclare, Dublin, c.1690
1690
Telescope by John Yarwell.
1685-1695
Pocket microscope by Jeremiah Sisson
1752
Telescope by Christopher Cock
1673
Edmund Culpeper
1720
Clarke's Hydrometer (c. 1755)
1755
Barnard Tompion clock
1708
George III's weighted cylinder
1762
Unweighted cylinder in frame
1762
Section of lightning conductor from St Paul’s cathedral
1769
Square signed "J.Ramsden, 1757"
1757
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Glass bell jar with a brass collar
1761
King George III's friction machine
1762
George III's apparatus for oblique and compound collision
1762
Double brass stand for bell jars on a brass pillar
1761
model carriage chassis with two axles, 1762
1762
George III's cycloidal pendulum
1762
George III's tidal demonstration model
1762
King George III's central forces machine
1762
George III's pendulum
1762
Gold repoussé watch depicting the Choice of Hercules, by John Ellicott
1767
Cylinder watch with enamelled gold case made for Queen Charlotte
1740-1760
Watch movement by Thomas Tompion with a later case and dial
1680
Longcase clock in a marquetry case by William Cattell
1675-1685
Silver watch with '6-hour dial' by William Bartram
1680
Watch movement with a quarter-repeating mechanism of early design by Thomas Tompion.
1680
Longcase clock with tidal dial by Christopher Pinchbeck
1715-1725
Quarter-repeating watch by George Graham
1745
Silver and tortoiseshell pair cased watch by Ignatius Huggeford
1675