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
Pair of ebony violin fingerboard shape and sized hollow fabrications
1758-1773
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
Cutter, Alert
1755
Gold amulet in the form of a cobra
2000-100 BCE
Pocket microscope by Jeremiah Sisson
1752
Mural arc made for King George III
1770
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
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
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
Expedition Crane
1764
Mezzotint: Portrait of John Arnold
1770
Freud electronic laughing ball
1990-96
Wood moulding plane, dated 1771
1771
Short mahogany strip brass pin gauge with five pins
1758-1769
Model diving bell with 12 sinking weights
before 1753
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
Atmospheric Engine by John Smeaton, 1772
1772 (original); 1919 (model)
Dial micrometer, 1760-1772.
1760-1772
Altazimuth theodolite by Benjamin Cole & Son
1755-1765
Arkwright's prototype spinning machine, 1769.
1769
Magnetic toy by George Adams
1765