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Antique bloodpressure machine

Description

I came across a 1920-1940 W.A Baum Co Inc. New York Baumanometer. It's a little dusty an quite old only thing wrong with it is the pump an tube I believe has dry rotted. Just curious if its worth anything if not I'd still like to hold on to it..

Category Other
Medium Wood box. Metal of some type rubber an has actual mercury in the calibrate millimeter .
Distinguishing marks Has serial number 132238
Condition Fair
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