Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Gold pair-cased watch with outer case chased in a basket-weave pattern by Charles Gretton
1702
Brass-bound lodestone
1675-1700
Napier's Bones
1690
Early balance spring watch by Thomas Tompion
1675-1679
Small white cup in soft paste porcelain
1748-1763
Expedition Crane
1764
Tumbler, horn, with silver strip around rim, 1742
1742
Pewter teapot, with straight and turned wooden handle, 1701-1750
1701-1750
Model 'Maximum machine', before 1753.
1740-1753
Saw used by Samuel Crompton
1750-1770
Earthenware pill tile
1671-1730
Pharmacy storage jar used for theriac
1725-1755
Le Cabinet de M. Le Clerc
circa 1711
Cutter, Alert
1755
Portrait of Benjamin Gray (1676 – 1764)
1745-1755
Plane table outfit by Benjamin Cole
1750-1766
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Sector by Bion
1700-1720
Combined graphometer and plummet clinometer, 1663.
1663
Spring-driven Bracket Clock by Isaac Thuret
1665-1670
Astronomical quadrant with stand, 1685-1724
1685-1724
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Telescope by John Yarwell.
1685-1695
Demainbray's convex lens
1750
Pocket microscope by Jeremiah Sisson
1752
Telescope by Christopher Cock
1673
Mural arc made for King George III
1770
Demainbray's syphon
1701-1752
Pulley from long-case clock by Fromanteel
1660-1665
Clock weight from long-case clock by Fromanteel
1660-1665
Gear wheel from long-case clock by Fromanteel
1660-1665
Etching of an electrically powered garden
1755
Escape wheel from long-case clock by Fromanteel
1660-1665
Edmund Culpeper
1720
Demainbray's polemoscope
1701-1752
Demainbray's speaking trumpet
1700-1752
Clarke's Hydrometer (c. 1755)
1755
Thomas Tuttell
1695-1702
Barnard Tompion clock
1708
Demainbray's hydrostatic paradox vessels
1735-1752
Demainbray's rat's tail crane model
1735-1753
George III's weighted cylinder
1762
Unweighted cylinder in frame
1762
Section of lightning conductor from St Paul’s cathedral
1769
Demainbray's turquoise disc
1745-1755
Spiral slide-rule
1663
Demainbray's yellow disc
1745-1755
Demainbray's Irish low-backed cart model
1735-1754.