London, South Kensington
9 November 2000
An early 20th Century navigraph by Hughes & Son
the 8in. dia. drum case with two index mirrors, horizon glass, sighting tubes, ivorine dial with black steel indicator, hinged to show gearing, under handle with steel adjusting knob, contained within a fitted wooden box with asscessories and instructions -- 8 x 9½in. (20,3 x 24cm.)
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The makers pamphlet included with this lot claims that the navigraph is a ..combination of the sextant and station-pointer, and a development of the Paget angle sextant..
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