18th century Ramsden inclinometer
18th century Ramsden inclinometer, with split-weighted pendulum indicator, signed on the upper weight ''Ramsden, London,'' secured over a brass backplate and calibrated with an arc of 30'', in glass-fronted dovetailed wood case. Case 22"h, 12"w, 2-1/4"d. Provenance: Estate of William Kranker, collector and dealer, Greenport, NY.
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18th century Ramsden inclinometer, with split-weighted pendulum indicator, signed on the upper weight ''Ramsden, London,'' secured over a brass backplate and calibrated with an arc of 30'', in glass-fronted dovetailed wood case. Case 22"h, 12"w, 2-1/4"d. Provenance: Estate of William Kranker, collector and dealer, Greenport, NY.
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