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gunner's folding rule: a folding rule carrying tables or scales specially adapted for the use of gunners.
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gunner's gauge scales: scales which provide the weight of a sphere (the shot) from a measurement of its diameter; in gunnery these scales were traditionally provided for iron, lead and stone.
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gunner's level: instrument used to set the elevation of a large gun, see article on the gunner's sight and level.
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gunner's rule: see rule.
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gunner's sight: instrument used to elevate and aim a large gun, see article on the gunner's sight and level.
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gunner's sight and level: instrument used to set a large gun to the horizontal, or to elevate and aim it on a target, see article on the gunner's sight and level.
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gunnery instrument: see gunner's compendium.
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hodometer: device for measuring distance by means of a wheel, pushed along the ground, attached to a geared movement with a dial or other form of distance register.
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