Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Expedition Crane
1764
Cutter, Alert
1755
Mezzotint portrait of Benjamin Franklin
1762
Mural arc made for King George III
1770
Etching of an electrically powered garden
1755
Clarke's Hydrometer (c. 1755)
1755
George III's weighted cylinder
1762
Unweighted cylinder in frame
1762
Section of lightning conductor from St Paul’s cathedral
1769
Square signed "J.Ramsden, 1757"
1757
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
Glass bell jar with a brass collar
1761
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
model carriage chassis with two axles, 1762
1762
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
Gold repoussé watch depicting the Choice of Hercules, by John Ellicott
1767
Watch with double dial
1760
Watch movement with remontoir and two balance springs by Thomas Mudge
1755
Musical table clock by Thwaites for Barraud
1767
Gold amulet in the form of a cobra
2000-100 BCE
Mezzotint: Portrait of John Arnold
1770
Freud electronic laughing ball
1990-96
7/8" steel gouge with octagonal hickory handle
1758-1769
Short mahogany strip brass pin gauge with five pins
1758-1769
Altazimuth theodolite by Benjamin Cole & Son
1755-1765
Cutter, Alert
1755
Arkwright's prototype spinning machine, 1769.
1769
Model diving bell with 12 sinking weights
before 1753
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
Model of Hooke's universal joint
1760
Mahogany cross-piece for an air pump
1761
George III's Magdeburg hemispheres
1761
George III's inclined plane and Horse-way
1762
George III's compound engine
1762
George III's model crriage body
1762
Silver microscope by George Adams, c. 1761.
1763
Mahogany board with round ends and two short brass pillars
1761
Two brass pillars for an air pump
1761
George III's clockwork bell
1761