Lunardi's second balloon ascending from St. George's Fields, 1785
1785-1790
Early balance spring watch by Thomas Tompion
1675-1679
Theodolite used for the Principal Triangulation of Great Britain
1791
Armillary sphere by Girolamo Della Volpaia
1554
Orrery made by John Rowley for the Earl of Orrery
1712-1713
Ready reckoner for ship's cargoes
1807
Demainbray's model scorpion catapult
1745-1755
Demainbray's Archimedean screw
1752
horological gravers
1850-1900
Mezzotint portrait of Benjamin Franklin
1762
wheel cutting machine
1668-1672 Probable
Telescope by John Yarwell.
1685-1695
Demainbray's convex lens
1750
Horological gravers with an oval profile
1850-1900
‘Medico-Electrical Machine’ by Nairne and Blunt
1782-1793
Sector signed John Allen
1630-1642
Horological gravers with triangular profile
1850-1900
horological gravers
1850-1900
horological gravers
1850-1900
horological graver
1850-1900
horological rubber
1850-1900
Pocket microscope by Jeremiah Sisson
1752
Dover Castle turret clock
1632-1640
Gunter quadrant by Walter Hayes
1648-1687
horological file
1850-1900
Telescope by Christopher Cock
1673
Mural arc made for King George III
1770
Demainbray's syphon
1701-1752
Small orrery by Benjamin Martin
1738-1777
Gunter quadrant
1650-1725
Satirical print of a failed balloon launch from Foley House, London in 1784
1784
Compendium by Elias Allen
1630-1653
Stipple-engraved portrait of Benjamin Martin
1815
Pulley from long-case clock by Fromanteel
1660-1665
Pair of bar magnets in box
1750-1795
Divers Projets
1798
Clock weight from long-case clock by Fromanteel
1660-1665
Gear wheel from long-case clock by Fromanteel
1660-1665
Gunter quadrant
1650-1725
Etching of an electrically powered garden
1755
Brass-bound lodestone
1675-1700
Escape wheel from long-case clock by Fromanteel
1660-1665
Demainbray's cometarium
1750-1760
Edmund Culpeper
1720
Silver sundial by Hunfrey Cole
1568-1590
100 Link Steel Surveying Chain, 1784.
1784
Demainbray's polemoscope
1701-1752
Demainbray's speaking trumpet
1700-1752
Clarke's Hydrometer (c. 1755)
1755
Thomas Tuttell
1695-1702