Gold amulet in the form of a cobra
2000-100 BCE
Pocket microscope by Jeremiah Sisson
1752
Clarke's Hydrometer (c. 1755)
1755
Demainbray's Archimedean screw
1752
Etching of an electrically powered garden
1755
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Cutter, Alert
1755
Demainbray's convex mirror
1752
Freud electronic laughing ball
1990-96
Demainbray's model of a camera obscura
1752
Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
Neolithic flint scraper
4000-2001 BCE
Model diving bell with 12 sinking weights
before 1753
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Cutter, Alert
1755
Two oil paintings of armed Cutter "Alert" (1753-4) each in gilt frames (bow and stern views)
1753-1754
Ear trumpet
1752
Wooden backstaff or Davis quadrant made by John Gilbert on Tower Hill
1730; 1967
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
Brass Clarke's hydrometer
1755
Mobile cellular telephone (Motorola 'Flip Phone') model no. F09SQD8955AB
1990-95
Guinea balance in case
1753-1754
Replica of Islamic Astrolabe
1066; 1876
Microscope (dated 1754)
1754
Viewer microscope, with bead lens, in square body
1888-185
A Chain Bridge
1753
NEMA cryptography machine type T-D
1945-50
Excavated neolithic flint perhaps used for trephination
3000-1500
copy of a gold cup.
3000-2000 BCE
Tubes for the whirling table
1753
Reversible axe on adze, green stone blade, North Papua (Astrolabe Bay)
2000 BCE
One cinquina
1752
Medal, bronze, commemorating L.J.M.
1755
Frame to demonstrate parallelogram of forces
1752
Model: showing concave lens virtual image
1752-1755
Terrestrial telescope, 1752.
1752
Model: submersible brass mesh cage
before 1753
Wilson screw barrel microscope (brass) in fishskin case with accessories
1753
Roman Coin of Tiberius
30 CE
Roman Coin of Tiberius
30 CE
Boxfoot microscope with ball-socketed pillar
1755
Pile-driver driven by a paddle wheel, 1754.
1754
Wooden model consisting of water wheel and treadmill in common frame
1753
Ancient Egyptian flint saw, replica
circa 3000 BCE
Copy of Musschenbroek's Pyrometer (Dilatometer), 1700-1731.
1877 (copy); 1700-1731 (original)