Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Dental Pelican for Tooth Pulling
1701-1800
Dover Castle turret clock
1632-1640
Napier's Bones
1690
Arkwright's Water Frame
1775
Wooden Acupuncture Model
1681
Sun-and-moon dial by Elias Allen
1607-1653
Theodolite used for the Principal Triangulation of Great Britain
1791
Sector signed John Allen
1630-1642
Anamorphosis Painting of Perspective View of a Ship Model
1744-1774
Early balance spring watch by Thomas Tompion
1675-1679
'Dutch forgery' watch signed John Wilter
1780
Arkwright's Water Frame, 1775
1775
Seal die, Ashby De La Zouch Canal Company
1794
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Combined graphometer and plummet clinometer, 1663.
1663
Demainbray's model scorpion catapult
1745-1755
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
wheel cutting machine
1668-1672 Probable
Demainbray's syphon
1701-1752
Gunter quadrant
1650-1725
Pair of bar magnets in box
1750-1795
Divers Projets
1798
Gunter quadrant
1650-1725
Etching of an electrically powered garden
1755
Brass-bound lodestone
1675-1700
Edmund Culpeper
1720
Demainbray's polemoscope
1701-1752
Demainbray's speaking trumpet
1700-1752
Celestial globe by Willem Janszoon Blaeu
1603
Barnard Tompion clock
1708
Demainbray's hydrostatic paradox vessels
1735-1752
Demainbray's wharf jib crane model
1729-1753
George III's weighted cylinder
1762
Unweighted cylinder in frame
1762
‘Visual glasses’ designed by Benjamin Martin
1756-1800
Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Sector by Charles Whitwell
1600-11
Demainbray's Irish low-backed cart model
1735-1754.
Cupellation furnace
1696-1700
Pair of seventeenth-century dividers
1600-1699
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Stipple-engraved portrait of Margaret Bryan and two children
1797
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 pendulum
1762