Chronometer movement in brass cage

Made:: 1925

maker:: Paul Ditisheim

Chronometer movement in brass cage, fitted with dial and hands

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License this image for commercial use at Science and Society Picture Library

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This image is released under a CC BY-NC-SA 4.0 Licence

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Chronometer movement in brass cage, fitted with dial and hands
Science Museum Group
© The Board of Trustees of the Science Museum

Chronometer movement in brass cage, fitted with dial and hands, lever escapement, Guillaume balance, steel hairspring, in mahogany case with glass top. One removable cage containing detent escapement, new patented Elinvar hairspring

Details

Category:: Time Measurement

Object Number:: 1925-193

Materials:: balance-spring: steel, balance wheel rim: nickel, steel and hairspring: elinvar (alloy including nickel, steel and chromium)

type:: chronometer

credit:: Mr. Paul Ditisheim

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Parts

Chronometer movement in brass cage

Chronometer movement in brass cage, fitted with dial and hands, lever escapement, Guillaume balance, steel hairspring, in mahogany case with glass top, Europe, c. 1900-1910.

Measurements:: overall: 131 mm x 183 mm x 194 mm, 3.01 kg

Materials:: brass (copper, zinc alloy) , glass , steel (metal) and mahogany (wood)

Object Number:: 1925-193 Pt1

type:: instrument component , chronometer and clock mechanism

Cage for chronometer movement

Removable cage for chronometer movement in brass cage, fitted with dial and hands, lever escapement, Guillaume balance, steel hairspring, in mahogany case with glass top