Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Tumbler, horn, with silver strip around rim, 1742
1742
Square signed "J.Ramsden, 1757"
1757
Clarke's Hydrometer (c. 1755)
1755
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Etching of an electrically powered garden
1755
Gold amulet in the form of a cobra
2000-100 BCE
Pocket microscope by Jeremiah Sisson
1752
Demainbray's Archimedean screw
1752
Demainbray's model scorpion catapult
1745-1755
Demainbray's convex lens
1750
Cutter, Alert
1755
Model 'Maximum machine', before 1753.
1740-1753
Demainbray's scioptric ball
1745-1755
Demainbray's convex mirror
1752
Section of track
1745-1755
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
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
Model of Vauloue's piledriver
1737-1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's compound microscope
1745
Model to demonstrate the path of a projectile
1740-1753
Cutter, Alert
1755
Neolithic flint scraper
4000-2001 BCE
Pair of coloured glass discs, 1750.
1745-1755
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
5 lancets
1744
Brass Clarke's hydrometer
1755
Mobile cellular telephone (Motorola 'Flip Phone') model no. F09SQD8955AB
1990-95
Mahogany and brass reflecting quadrant
1748
Guinea balance in case
1753-1754
Replica of Islamic Astrolabe
1066; 1876
Microscope (dated 1754)
1754
Set of flat troy penny weights in fitted mahogany case
1737
A Chain Bridge
1753
NEMA cryptography machine type T-D
1945-50
Reading Glass (c.1750)
1750