A good William Cary circular protractor, English, 1830,
with geared knob turn for full diameter bar, double hinged scribe arms with shaped frame, main wheel with four spokes and glass sight cross centre, full circumference inscribed divider to 360 degrees, signed Cary London to bar, blued adjustment screws to arms, in original circular plain mahogany case with hinged lid - the instrument 10in. (25.5cm) diameter
Sold for
£1,125
inc. premium
Category: Collectibles / Scientific Instruments
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Jon Baddeley
Bonhams
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United Kingdom
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0207 393 3872
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Specialist
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Scientific Instruments