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Image

Has Image1
Non-Commercial Use1

Category

Mechanical Power Transmission1
Surveying1

Maker

Dover, John1
John Dover1
Ryder & Davidson1

Object type

gearbox1
magnetic compass1
prismatic compass1
prismatic compass; magnetic compass1

Place

Charlton2
Charlton, Greenwich, London, Greater London, England, United Kingdom1
Holborn1
Holborn, London, England, United Kingdom; Charlton, London, England, United Kingdom1

Date

From To

"Heliocentric" triple reduction gear ratio 20

1926

Prismatic magnetic compass by John Dover, London & Charlton, England, 1851-1865

Prismatic compass, 1851-1865

1851-1865

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