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A VERY RARE WWII RAF-ISSUE PORTABLE ALTIMETER CALIBRATOR BY R.W. MUNRO, NO.130 CIRCA 1939 constructed in brass with japanned finish, the cylindric...
Lot 367
A RARE, POSSIBLY UNIQUE, PROTOTYPE NAVIGATION COMPUTER BY HENRY HUGHES & SON LTD, CIRCA 1935
A RARE, POSSIBLY UNIQUE, PROTOTYPE NAVIGATION COMPUTER BY HENRY HUGHES & SON LTD, CIRCA 1935 constructed principally in brass with various semi-ci...
A RARE TIDE TABLE / CALCULATOR BY RALPH WALKER, CIRCA 1795 constructed in brass with base plate and two volvelles, signed and inscribed to centre ...
A RARE WENHAM TYPE BINOCULAR MICROSCOPE BY WATSON & SONS, LONDON, CIRCA 1888 constructed in lacquered brass, signed on the tripod base as per titl...
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