Demainbray's convex lens
1750
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Etching of an electrically powered garden
1755
Demainbray's cometarium
1750-1760
Gold amulet in the form of a cobra
2000-100 BCE
Square signed "J.Ramsden, 1757"
1757
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Pocket microscope by Jeremiah Sisson
1752
Demainbray's Archimedean screw
1752
Clarke's Hydrometer (c. 1755)
1755
Cutter, Alert
1755
Freud electronic laughing ball
1990-96
Demainbray's convex mirror
1752
Demainbray's model of a camera obscura
1752
Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
Model diving bell with 12 sinking weights
before 1753
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's four wheeled wagon model
1751
Demainbray's optical model
1752
Demainbray's optical model
1752
Neolithic flint scraper
4000-2001 BCE
Model of Hooke's universal joint
1760
Cutter, Alert
1755
Frame to demonstrate parallelogram of forces
1752
Glass sphere on a stand
1750
Model: showing concave lens virtual image
1752-1755
Bridge frame
1750
Terrestrial telescope, 1752.
1752
Model: submersible brass mesh cage
before 1753
Silver Coin of Augustus III (Poland)
1760
Roman Coin of Tiberius
30 CE
Roman Coin of Tiberius
30 CE
Red granite drill core
2686-2613 BCE
Boxfoot microscope with ball-socketed pillar
1755
Drum component for volute compass
1760
Drum component for volute compass
1760
Drum component for volute compass
1760
Drum component for volute compass
1760
Drum component for volute compass
1760
Pile-driver driven by a paddle wheel, 1754.
1754
Diagonal Spy Glass
1750
Reading Glass (c.1750)
1750
Reading Glass (c.1750)
1750
Viewer microscope, with bead lens, in square body
1888-185
A Chain Bridge
1753
NEMA cryptography machine type T-D
1945-50
Reading Glass (c.1750)
1750
Calf's Head Weight
1370-1350 BCE; 1931
Plaster replica of black Basalt Cubit Rod 531
1931; 250 BCE