Split object-glass micrometer by Dollond

Made:: 1760-1800 in London

inventor:: Peter Dollond

Split object-glass micrometer by Dollond

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

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

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

License

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

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

License

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

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

License

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

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

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

King's College London
© The Board of Trustees of the Science Museum

Science Museum Group
© The Board of Trustees of the Science Museum

Split object-glass micrometer by Dollond, London with mahogany case.

Details

Category:: King George III

Object Number:: 1927-1782

Materials:: brass, glass and steel

Measurements:: approx. max.: length 340 mm
width 40 mm
height 130 mm
length 341 mm
height 55 mm
width 147 mm
object in box: height 21 mm
object in box: length 324 mm
object in box: width 133 mm
lens: diameter mm

type:: split-lens objective micrometer

credit:: King’s College London

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Parts

split object-glass micrometer, 1760-1780

split object-glass micrometer, 1760-1780

Split object-glass micrometer by Dollond, London, 1760-1780

Measurements:: overall: 120 mm x 330 mm x 90 mm, 1.15 kg

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

Object Number:: 1927-1782 Pt1

type:: filar micrometer

Mahogany case, for split object-glass micrometer

Mahogany case for split object-glass micrometer by Dollond, London.

Measurements:: approx. max.: length 340 mm
width 40 mm
height 130 mm
length 341 mm
height 55 mm
width 147 mm
object in box: height 21 mm
object in box: length 324 mm
object in box: width 133 mm
lens: diameter mm