Marine Timekeeper known as 'H5' by John Harrison and Son 1770
1770
Doorcase 56 Lincoln’s Inn Fields
circa 1750
Demainbray's Archimedean screw
1752
Mezzotint portrait of Benjamin Franklin
1762
Demainbray's convex lens
1750
Etching of an electrically powered garden
1755
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
Unweighted cylinder in frame
1762
George III's weighted cylinder
1762
Hindley's pyrometer and three expansion tubes made by Henry Hindley
1752
Glass bell jar with a brass collar
1761
George III's apparatus for oblique and compound collision
1762
model carriage chassis with two axles, 1762
1762
George III's cycloidal pendulum
1762
George III's pendulum
1762
Turret clock movement by William Smith
1750
Saw used by Samuel Crompton
1750-1770
Expedition Crane
1764
Plane table outfit by Benjamin Cole
1750-1766
Cutter, Alert
1755
Pocket microscope by Jeremiah Sisson
1752
Mural arc made for King George III
1770
Demainbray's cometarium
1750-1760
Clarke's Hydrometer (c. 1755)
1755
Section of lightning conductor from St Paul’s cathedral
1769
Square signed "J.Ramsden, 1757"
1757
King George III's friction machine
1762
Double brass stand for bell jars on a brass pillar
1761
George III's tidal demonstration model
1762
King George III's central forces machine
1762
Gold repoussé watch depicting the Choice of Hercules, by John Ellicott
1767
Watch with double dial
1760
Watch movement with remontoir and two balance springs by Thomas Mudge
1755
Small lantern clock with alarm signed George Graham
1750-1760
Musical table clock by Thwaites for Barraud
1767
Gold amulet in the form of a cobra
2000-100 BCE
Mezzotint: Portrait of John Arnold
1770
Freud electronic laughing ball
1990-96
Short mahogany strip brass pin gauge with five pins
1758-1769
Model diving bell with 12 sinking weights
before 1753
Demainbray's convex mirror
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's optical model
1752
Demainbray's four wheeled wagon model
1751
Demainbray's model of a camera obscura
1752