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全部拍賣 / Nautica, Technica & Optic / C. F. Palmer (1864-1938) of London, Pendulum Pulse Generator...
C. F. Palmer (1864-1938) of London, Pendulum Pulse Generator, complete with its protective wooden case, the case 15.5" high, 8.5" wide, depth 5" ** The electrically maintained pendulum upon an adjustable levelling stand, is a time switch used for measuring time in physiological experiments. It has outputs of one, six, ten, thirty and sixty seconds, the operator selects the desired output before starting the pendulum ** From the David Read Collection
估價:$158.61
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$158.61
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