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Horizontal Force Instrument
horizontal force instrument.
A metal (aluminium) tube with a cut away glazed band around the centre. There is a hinged lid. The tube contains two needles one above the other, a lens as top glass, a lens above an index marker for the top needle, graduations around the lower, a spirit level and a mirror in the lid. The lid operates a needle lifter.
O.A. Height 3.6" (9.2 cm)
A metal (aluminium) tube with a cut away glazed band around the centre. There is a hinged lid. The tube contains two needles one above the other, a lens as top glass, a lens above an index marker for the top needle, graduations around the lower, a spirit level and a mirror in the lid. The lid operates a needle lifter.
O.A. Height 3.6" (9.2 cm)
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Object Details
| ID: | ACO0818 |
|---|---|
| Type: | Horizontal Force Instrument |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1945 |
| Credit: | National Maritime Museum, Greenwich, London, Admiralty Compass Observatory |
| Measurements: | Overall: 95 mm x 85 mm x 95 mm x .6 kg |