Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Napier's Bones
1690
Compound microscope
1700
Orrery made by John Rowley for the Earl of Orrery
1712-1713
Wooden Acupuncture Model
1681
Tumbler, horn, with silver strip around rim, 1742
1742
Model 'Maximum machine', before 1753.
1740-1753
Demainbray's Irish low-backed cart model
1735-1754.
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Demainbray's convex lens
1750
Demainbray's syphon
1701-1752
Etching of an electrically powered garden
1755
Demainbray's polemoscope
1701-1752
Demainbray's speaking trumpet
1700-1752
Demainbray's hydrostatic paradox vessels
1735-1752
Demainbray's rat's tail crane model
1735-1753
Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Watch in an octagonal silver case by Robert Grebauval
1625
Silver watch in the shape of a Tudor rose by William Clay
1640
Wandering hour watch by Sinclare, Dublin, c.1690
1690
Telescope by John Yarwell.
1685-1695
Sector signed John Allen
1630-1642
Pocket microscope by Jeremiah Sisson
1752
Gunter quadrant by Walter Hayes
1648-1687
Telescope by Christopher Cock
1673
Compendium by Elias Allen
1630-1653
Pulley from long-case clock by Fromanteel
1660-1665
Escape wheel from long-case clock by Fromanteel
1660-1665
Edmund Culpeper
1720
Silver sundial by Hunfrey Cole
1568-1590
Clarke's Hydrometer (c. 1755)
1755
"The description and use of the Sector, Cross-staff and other Instruments", 2nd edition by Edmund Gunter
1636
Gunter sector signed Elias Allen
1623
Celestial globe by Willem Janszoon Blaeu
1603
Barnard Tompion clock
1708
George III's weighted cylinder
1762
Unweighted cylinder in frame
1762
Section of lightning conductor from St Paul’s cathedral
1769
Spiral slide-rule
1663
Compendium rule signed Humfrey Cole
1574
Square signed "J.Ramsden, 1757"
1757
Pair of seventeenth-century dividers
1600-1699
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Glass bell jar with a brass collar
1761
King George III's friction machine
1762
George III's apparatus for oblique and compound collision
1762
Double brass stand for bell jars on a brass pillar
1761