Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Etching of an electrically powered garden
1755
George III's weighted cylinder
1762
Unweighted cylinder in frame
1762
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
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
Watch with double dial
1760
Gold amulet in the form of a cobra
2000-100 BCE
Cutter, Alert
1755
Pocket microscope by Jeremiah Sisson
1752
Mural arc made for King George III
1770
Clarke's Hydrometer (c. 1755)
1755
Section of lightning conductor from St Paul’s cathedral
1769
Square signed "J.Ramsden, 1757"
1757
King George III's friction machine
1762
George III's tidal demonstration model
1762
King George III's central forces machine
1762
Gold repoussé watch depicting the Choice of Hercules, by John Ellicott
1767
Watch movement with remontoir and two balance springs by Thomas Mudge
1755
Glass bell jar with a brass collar
1761
Model diving bell with 12 sinking weights
before 1753
George III's glass sphere
1761
Demainbray's convex mirror
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's four wheeled wagon model
1751
Demainbray's model of a camera obscura
1752
Mahogany cross-piece for an air pump
1761
George III's inclined plane and Horse-way
1762
Mahogany board with round ends and two short brass pillars
1761
Two brass pillars for an air pump
1761
Keys to the Clockmakers Company chest
1766
Neolithic flint scraper
4000-2001 BCE
Cutter, Alert
1755
Magnetic toy by George Adams
1765
Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
George III's Magdeburg hemispheres
1761
George III's compound engine
1762
George III's model crriage body
1762
Silver microscope by George Adams, c. 1761.
1763
George III's clockwork bell
1761
George III's double-barrelled air pump
1761