Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Napier's Bones
1690
Wooden Acupuncture Model
1681
Plane table outfit by Benjamin Cole
1750-1766
Compound microscope
1700
Pair-cased pocket watch in pinchbeck and leather outer casing with verge escapement
1705-1737
Arkwright's prototype spinning machine, 1769.
1769
Freud electronic laughing ball
1990-96
Long mahogany strip brass pin gauge with five pins
1758-1769
Short mahogany strip brass pin gauge with eight pins
1758-1769
Perspective drawing apparatus, incomplete, in integral mahogany case
1760-1770
Long mahogany strip brass pin gauge with eight pins
1758-1769
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Combined graphometer and plummet clinometer, 1663.
1663
Cutter, Alert
1755
Demainbray's model scorpion catapult
1745-1755
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
wheel cutting machine
1668-1672 Probable
Telescope by John Yarwell.
1685-1695
Demainbray's convex lens
1750
Pocket microscope by Jeremiah Sisson
1752
Telescope by Christopher Cock
1673
Mural arc made for King George III
1770
Demainbray's syphon
1701-1752
Gunter quadrant
1650-1725
Pulley from long-case clock by Fromanteel
1660-1665
Clock weight from long-case clock by Fromanteel
1660-1665
Gear wheel from long-case clock by Fromanteel
1660-1665
Gunter quadrant
1650-1725
Etching of an electrically powered garden
1755
Brass-bound lodestone
1675-1700
Escape wheel from long-case clock by Fromanteel
1660-1665
Demainbray's cometarium
1750-1760
Edmund Culpeper
1720
Demainbray's polemoscope
1701-1752
Demainbray's speaking trumpet
1700-1752
Clarke's Hydrometer (c. 1755)
1755
Thomas Tuttell
1695-1702
Barnard Tompion clock
1708
Demainbray's hydrostatic paradox vessels
1735-1752
Demainbray's wharf jib crane model
1729-1753
Demainbray's rat's tail crane model
1735-1753
George III's weighted cylinder
1762
Unweighted cylinder in frame
1762
Section of lightning conductor from St Paul’s cathedral
1769
Demainbray's turquoise disc
1745-1755
Spiral slide-rule
1663
Demainbray's yellow disc
1745-1755
Demainbray's Irish low-backed cart model
1735-1754.