Fixed brass gimbal, base plate 2 15/16" diameter, brass ring 2 1/2" i/d
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Hinged brass gimbal, base plate 4" diameter, brass ring 2 1/2" i/d
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Long reach old style gimbal base plate is 3 3/4", brass ring 2 1/2" i/d knobs 3/4" diameter
with old style knobs
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Brass marine cistern cover, i/d of top 1 3/8" diameter
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Large gimbal, 4" i/d, cast, suitable for large sympiesometer type ships barometers
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