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A Boxwood Nautical Slide Rule by Stanley, London, with scales for displacement in tons, speed in knots, indicated horse power etc., length 35.8cm
A Boxwood Slide Rule, Nautical Land & Sea Speed Reckoner, designed by Captain W N Mclean, dated July 30th 1919, made by C T Cooper & Sons, London,...
A Large Case of Drawing Instruments by Harling, including three-legged dividers, large proportional dividers, plotting compass, scale rules and dr...
Lot 105
A Brass Pantograph by Adams,
A Brass Pantograph by Adams, English, c.1800, signed ‘Adams, London’, with ivory wheels, in fitted mahogany case
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