Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Pocket microscope by Jeremiah Sisson
1752
Demainbray's cometarium
1750-1760
Clarke's Hydrometer (c. 1755)
1755
Unweighted cylinder in frame
1762
George III's weighted cylinder
1762
Section of lightning conductor from St Paul’s cathedral
1769
Square signed "J.Ramsden, 1757"
1757
Glass bell jar with a brass collar
1761
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
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
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
Cylinder watch with enamelled gold case made for Queen Charlotte
1740-1760
Gold repoussé watch depicting the Choice of Hercules, by John Ellicott
1767
Quarter-repeating watch by George Graham
1745
Watch movement with remontoir and two balance springs by Thomas Mudge
1755
Triple-cased quarter-repeater watch by Paul du Pin
1739
Small lantern clock with alarm signed George Graham
1750-1760
Oil painting portrait of George Graham, 1740-1749
1740-1749
Gold repeating watch by Benjamin Gray
1730
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Demainbray's convex lens
1750
Etching of an electrically powered garden
1755
Demainbray's hydrostatic paradox vessels
1735-1752
Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Demainbray's Irish low-backed cart model
1735-1754.
Turret clock movement by William Smith
1750
Cutter, Alert
1755
Demainbray's rat's tail crane model
1735-1753
model carriage chassis with two axles, 1762
1762
Portrait of Benjamin Gray (1676 – 1764)
1745-1755
Demainbray's model scorpion catapult
1745-1755
Mural arc made for King George III
1770
Watch with double dial
1760
Gold amulet in the form of a cobra
2000-100 BCE
Great spinning wheel
c.1750
Model wagon, horse-drawn quarry truck
1730
Demainbray's compound microscope
1745
Magnetic toy by George Adams
1765
George III's glass sphere
1761
Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
Mahogany cross-piece for an air pump
1761