Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Section of lightning conductor from St Paul’s cathedral
1769
Isaac Newton’s Reflecting Telescope (replica)
1668; 1924
Silver microscope by George Adams, c. 1761.
1763
Arkwright's prototype spinning machine, 1769.
1769
Long mahogany strip brass pin gauge with five pins
1758-1769
Short mahogany strip brass pin gauge with eight pins
1758-1769
Perspective drawing apparatus, incomplete, in integral mahogany case
1760-1770
Long mahogany strip brass pin gauge with eight pins
1758-1769
Tumbler, horn, with silver strip around rim, 1742
1742
Model 'Maximum machine', before 1753.
1740-1753
Small white cup in soft paste porcelain
1748-1763
Expedition Crane
1764
Saw used by Samuel Crompton
1750-1770
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Etching of an electrically powered garden
1755
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
Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Demainbray's Irish low-backed cart model
1735-1754.
model carriage chassis with two axles, 1762
1762
George III's cycloidal pendulum
1762
George III's pendulum
1762
Oil painting portrait of George Graham, 1740-1749
1740-1749
Plane table outfit by Benjamin Cole
1750-1766
Cutter, Alert
1755
Demainbray's convex lens
1750
Pocket microscope by Jeremiah Sisson
1752
Clarke's Hydrometer (c. 1755)
1755
Square signed "J.Ramsden, 1757"
1757
Glass bell jar with a brass collar
1761
King George III's friction machine
1762
George III's tidal demonstration model
1762
King George III's central forces machine
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
Musical table clock by Thwaites for Barraud
1767
Portrait of Benjamin Gray (1676 – 1764)
1745-1755
Demainbray's model scorpion catapult
1745-1755
Demainbray's cometarium
1750-1760
Double brass stand for bell jars on a brass pillar
1761