Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Small white cup in soft paste porcelain
1748-1763
Expedition Crane
1764
Plane table outfit by Benjamin Cole
1750-1766
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Sector by Bion
1700-1720
Demainbray's model scorpion catapult
1745-1755
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Demainbray's convex lens
1750
Pocket microscope by Jeremiah Sisson
1752
Mural arc made for King George III
1770
Demainbray's syphon
1701-1752
Etching of an electrically powered garden
1755
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
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
Demainbray's yellow disc
1745-1755
Demainbray's Irish low-backed cart model
1735-1754.
Square signed "J.Ramsden, 1757"
1757
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
Tumbler, horn, with silver strip around rim, 1742
1742
Pewter teapot, with straight and turned wooden handle, 1701-1750
1701-1750
Model 'Maximum machine', before 1753.
1740-1753
Clay tobacco pipe, 1720-1770, English
1720-1770
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
model carriage chassis with two axles, 1762
1762
George III's cycloidal pendulum
1762
George III's tidal demonstration model
1762
King George III's central forces machine
1762
George III's pendulum
1762
Gold repoussé watch depicting the Choice of Hercules, by John Ellicott
1767
Cylinder watch with enamelled gold case made for Queen Charlotte
1740-1760