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Model by Dent showing the mechanism of stop watches

Model of mechanism for setting hands

Dent's patent liquid compass with air chamber around rim

1860-1870

Rolling ball clock by E. Dent and Co

1920
Photograph (7"x9") of a barometric compensation for the new standard clock at the Royal Observatory, Greenwich, supplied and E. Dent & Co. Ltd., Strand, London, UNited Kingdom, 1876

Photograph of barometric compensation for new standard clock at the Royal Observatory

1876
Clock, recording clock (patent number 544119)

Recording clock

1901-2000
Model by Dent of lever escapement for use with lantern, 1850-1883

Model of a Lever Escapement , 1850-1883

1850-1883
Model of chronometer escapement, for use with a projecting latern, made by Dent, 1950-1883. Represents the detent chronometer escapement, invented by Thomas Earnshaw 1777-1787. This escapement was typically used in marine chronometers.

Model representing Earnshaw's detent chronometer escapement, 1950-1883

1950-1883
Model by Dent of Graham's cylinder escapement for use with lantern, 1850-1883

Model of Graham's Cylinder Escapement, 1850-1883

1850-1883
Marine balance springs

Marine balance springs

1875-1925
Clock, recording clock (patent number 544119)

Recording clock

1901-2000
Copy of Gravesande's first heliostat

Copy of Gravesande's first heliostat

1878
Framed drawing (16½-inches x 2-foot 6-inches) of a compensation pendulum.

Frame drawing of compensation pendulum

1876