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Object Record

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Object Name Timer
Catalog Number 75.1.89
Collection Miscellaneous
Date c. 1875
Description Pneumatic timer, T. Mayhew & Company.
C 1875
Maker T. Mayhew and Company
Place of Origin New York, New York, USA
Notes This pneumatic timer has an 8-hour balance/lever movement, designed to measure the total time of a non-vacuum condition, by virtue of a leather bellows that pulls a piece of spring steel into the balance whenever it receives vacuum. (