George III's pendulum
1762
King George III's central forces machine
1762
Section of lightning conductor from St Paul’s cathedral
1769
Glass bell jar with a brass collar
1761
Double brass stand for bell jars on a brass pillar
1761
George III's weighted cylinder
1762
model carriage chassis with two axles, 1762
1762
Mezzotint portrait of Benjamin Franklin
1762
George III's tidal demonstration model
1762
King George III's friction machine
1762
Unweighted cylinder in frame
1762
Expedition Crane
1764
George III's cycloidal pendulum
1762
George III's apparatus for oblique and compound collision
1762
Mural arc made for King George III
1770
Gold amulet in the form of a cobra
2000-100 BCE
Perspective drawing apparatus, incomplete, in integral mahogany case
1760-1770
Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
George III's compound engine
1762
George III's clockwork bell
1761
Silver microscope by George Adams, c. 1761.
1763
George III's philosophical table
1761-1762
Mahogany cross-piece for an air pump
1761
George III's glass sphere
1761
George III's inclined plane and Horse-way
1762
Magnetic toy by George Adams
1765
George III's model crriage body
1762
Mahogany board with round ends and two short brass pillars
1761
Mezzotint: Portrait of John Arnold
1770
Atmospheric Engine by John Smeaton, 1772
1772 (original); 1919 (model)
Two brass pillars for an air pump
1761
Freud electronic laughing ball
1990-96
Dial micrometer, 1760-1772.
1760-1772
Wood moulding plane, dated 1771
1771
Arkwright's prototype spinning machine, 1769.
1769
Model of Hooke's universal joint
1760
George III's double-barrelled air pump
1761
George III's Magdeburg hemispheres
1761
Neolithic flint scraper
4000-2001 BCE
Axe head shaped flint
10000-5000 BCE
Iron Weight
1910-130
Stop-watch movementwith cylinder escapement
1766
Verge repeating watch
1713-1750
Optical cabinet made by B. Martin about 1771
1771
Figure-8 Microscope (c.1770)
1770
Pocket microscope in silver
1770
Engraving. Design for a trotting carriage by S. Miller after Francis Hayman. c. 176-
1760-1769
Mr Thomas Mudge
1772
Trade token
1772
Solar microscope (dated 1770) signed B.MARTIN INVT ET FECIT LONDINI NO 34
1770