George III's pendulum
1762
Dover Castle turret clock
1632-1640
Gunter quadrant
1650-1725
Section of lightning conductor from St Paul’s cathedral
1769
Etching of an electrically powered garden
1755
Demainbray's Irish low-backed cart model
1735-1754.
Demainbray's cometarium
1750-1760
Demainbray's hydrostatic paradox vessels
1735-1752
Glass bell jar with a brass collar
1761
Demainbray's polemoscope
1701-1752
"The description and use of the Sector, Cross-staff and other Instruments", 2nd edition by Edmund Gunter
1636
Pair of bar magnets in box
1750-1795
Sector signed John Allen
1630-1642
Double brass stand for bell jars on a brass pillar
1761
Stipple-engraved portrait of Benjamin Martin
1815
Cupellation furnace
1696-1700
Pair of seventeenth-century dividers
1600-1699
horological rubber
1850-1900
Compendium by Elias Allen
1630-1653
Compendium rule signed Humfrey Cole
1574
100 Link Steel Surveying Chain, 1784.
1784
Demainbray's syphon
1701-1752
George III's weighted cylinder
1762
Satirical print of a failed balloon launch from Foley House, London in 1784
1784
model carriage chassis with two axles, 1762
1762
Divers Projets
1798
Mezzotint portrait of Benjamin Franklin
1762
Sector by Charles Whitwell
1600-11
Demainbray's speaking trumpet
1700-1752
George III's tidal demonstration model
1762
Stipple-engraved portrait of Margaret Bryan and two children
1797
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Thomas Tuttell
1695-1702
Demainbray's Archimedean screw
1752
wheel cutting machine
1668-1672 Probable
Unweighted cylinder in frame
1762
A Treatise named Lucarsolace
horological gravers
1850-1900
Clarke's Hydrometer (c. 1755)
1755
Demainbray's model scorpion catapult
1745-1755
Demainbray's convex lens
1750
Demainbray's rat's tail crane model
1735-1753
Demainbray's wharf jib crane model
1729-1753
Edmund Culpeper
1720
George III's cycloidal pendulum
1762
George III's apparatus for oblique and compound collision
1762
Slide rule for exchange of weights and measures
1815
‘Visual glasses’ designed by Benjamin Martin
1756-1800
Mural arc made for King George III
1770
Spiral slide-rule
1663