An Unusual Early 20th Century Aluminium framed sextant rangefinder, signed and numbered on the nickel silver main arc Stanley London No 7 Patent No 20693, 10in (25cm) radius the main arc graduated for and incised Base Height In Feet and didvided 0-50 thence in 5 foot graduations to 160, the index arm with later compass card in glazed circular compartment and cylindrical range scale graduated in yards from 50-7000 and with tangential pressure arm carrying index mirror, horizon mirror, one erect image telescope and one inverting telescope, the latter with rack and pinion focus, in fitted mahogany carrying case, with brass plaque inscribed Universal Station Keeper and Range Follower Patent No. 20693 - 13¾oin (35cm) wide
An Unusual Early 20th Century Aluminium framed sextant rangefinder, signed and numbered on the nickel silver main arc Stanley London No 7 Patent No 20693, 10in (25cm) radius the main arc graduated for and incised Base Height In Feet and didvided 0-50 thence in 5 foot graduations to 160, the index arm with later compass card in glazed circular compartment and cylindrical range scale graduated in yards from 50-7000 and with tangential pressure arm carrying index mirror, horizon mirror, one erect image telescope and one inverting telescope, the latter with rack and pinion focus, in fitted mahogany carrying case, with brass plaque inscribed Universal Station Keeper and Range Follower Patent No. 20693 - 13¾oin (35cm) wide
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.jpg "Source: Christie's")
.jpg "Source: Christie's")
