Divers Projets
1798
Armillary sphere by Girolamo Della Volpaia
1554
Dividing engine for making sextants and octants
Made late 1700s, modified 1800s
Demainbray's Archimedean screw
1752
Demainbray's syphon
1701-1752
Pair of bar magnets in box
1750-1795
Demainbray's polemoscope
1701-1752
Demainbray's speaking trumpet
1700-1752
Celestial globe by Willem Janszoon Blaeu
1603
Demainbray's hydrostatic paradox vessels
1735-1752
Demainbray's turquoise disc
1745-1755
Demainbray's yellow disc
1745-1755
Pair of seventeenth-century dividers
1600-1699
Demainbray's convex lens
1750
‘Visual glasses’ designed by Benjamin Martin
1756-1800
Demainbray's model scorpion catapult
1745-1755
Ready reckoner for ship's cargoes
1807
Telescope by John Yarwell.
1685-1695
Pocket microscope by Jeremiah Sisson
1752
Gunter quadrant by Walter Hayes
1648-1687
Telescope by Christopher Cock
1673
Mural arc made for King George III
1770
Lunardi's second balloon ascending from St. George's Fields, 1785
1785-1790
Small orrery by Benjamin Martin
1738-1777
Satirical print of a failed balloon launch from Foley House, London in 1784
1784
Stipple-engraved portrait of Benjamin Martin
1815
Compendium by Elias Allen
1630-1653
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
Brass-bound lodestone
1675-1700
Escape wheel from long-case clock by Fromanteel
1660-1665
Demainbray's cometarium
1750-1760
Silver sundial by Hunfrey Cole
1568-1590
100 Link Steel Surveying Chain, 1784.
1784
Clarke's Hydrometer (c. 1755)
1755
"The description and use of the Sector, Cross-staff and other Instruments", 2nd edition by Edmund Gunter
1636
Thomas Tuttell
1695-1702
Gunter sector signed Elias Allen
1623
A Treatise named Lucarsolace
Section of lightning conductor from St Paul’s cathedral
1769
Spiral slide-rule
1663
Compendium rule signed Humfrey Cole
1574
The Improved Pedometer or Waywiser
1765-1806
Square signed "J.Ramsden, 1757"
1757
Trade card for John Yarwell, optician, London, England, 1697
1697
Slide rule for exchange of weights and measures
1815
King George III's friction machine
1762
George III's tidal demonstration model
1762
King George III's central forces machine
1762