Demainbray's convex lens
1750
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Pocket microscope by Jeremiah Sisson
1752
Gold amulet in the form of a cobra
2000-100 BCE
Demainbray's Archimedean screw
1752
Freud electronic laughing ball
1990-96
Demainbray's convex mirror
1752
Demainbray's model of a camera obscura
1752
Neolithic flint scraper
4000-2001 BCE
Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
Demainbray's compound microscope
1745
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
Perforated bronze medal by Antonio Selvi
1745
Portrait. Sir Samuel Garth. Engraving 1748
1748
Frame to demonstrate parallelogram of forces
1752
Glass sphere on a stand
1750
Bridge frame
1750
Terrestrial telescope, 1752.
1752
Model: submersible brass mesh cage
before 1753
Roman Coin of Tiberius
30 CE
Roman Coin of Tiberius
30 CE
Red granite drill core
2686-2613 BCE
Diagonal Spy Glass
1750
Reading Glass (c.1750)
1750
Reading Glass (c.1750)
1750
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
Six ivory balls
1750
Plaster replica of IBEX weight
1370-1350 BCE; 1931
Level by Benjamin Cole
1750
Trade Bill Le Sr. Magny
1750
Black stone container or palette
2000-1000
Harpenden pocket stadiometer sent out to Ludlow Boys' School as part of a series of nationwide measurements
1972-3
Plano-convex brick, Ubaid, Iraq, c 2500 BC.
2500 BCE
Length of red silk ribbon worn as a belt to promote general good health
1880-120
Mobile cellular telephone (Motorola 'Flip Phone') model no. F09SQD8955AB
1990-95
Tubes for the whirling table
1753
Bristol ruby coach glass with ribbed stem
circa 1750
Ancient Egyptian flint saw, replica
circa 3000 BCE
Reversible axe on adze, green stone blade, North Papua (Astrolabe Bay)
2000 BCE
Portrait. G.B. Beccaria. Professor of Physics
1748