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Gunner's Caliper
Unsigned
circa 1600; Dutch
Iron; 690 x 130 x 60 mm
This unsigned and undated caliper, whose country of origin is uncertain, would have been used to measure the outer diameter of a round or cylindrical object, such as a cannon ball.In the art of war a cannoneer had to make sure that the diameters of his cannon balls were within a narrowly defined range: slightly too large and they would not fit, too small and their velocity of exit would be so slow as to render them useless.
Museum Boerhaave, Leiden
Inventory no. 22973
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Basic URL: http://www.mhs.ox.ac.uk/epact/catalogue.php?ENumber=38096 |
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