Gold amulet in the form of a cobra
2000-100 BCE
Square signed "J.Ramsden, 1757"
1757
Pocket microscope by Jeremiah Sisson
1752
Clarke's Hydrometer (c. 1755)
1755
Demainbray's Archimedean screw
1752
Etching of an electrically powered garden
1755
Glass bell jar with a brass collar
1761
Double brass stand for bell jars on a brass pillar
1761
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
Model of Hooke's universal joint
1760
Mahogany cross-piece for an air pump
1761
George III's clockwork bell
1761
George III's glass sphere
1761
Mahogany board with round ends and two short brass pillars
1761
Cutter, Alert
1755
Two brass pillars for an air pump
1761
George III's double-barrelled air pump
1761
George III's Magdeburg hemispheres
1761
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
Glass bulb, with collar, plug, tap and circular base plate
1761
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
Wooden backstaff.
1759
Reversible axe on adze, green stone blade, North Papua (Astrolabe Bay)
2000 BCE
Silver medal commemorating Charles Alexander Loth
1756