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Italian made
and white milk glass shade
KELVIN & WILDRID O
Dimensions: 6
Cased Trough Compass by Hilger & Watts, Ltd. monocular Italian madeWooden Cased Trough Compass by Hilger & Watts Ltd. English made, circa 1950. Trough Compasses were used to accurately align other instruments such as a plane table, theodolite, etc. to magnetic north. Encased in gilded wooden box, with sliding lid. The magnetized steel needle is aligned with brass bar to locate true North (opposite end shows South). An early, pre serialized piece by well known, British opticians & scientific instrument makers, Hilger
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