Category: Misc. Diagnostic
Estimated Date: 1880
Manufacturer: Codman and Shurtleff
Description: 6“x 3” oval metal case formerly covered with leather contains an oval band of spring metal with a scale attached in the center. A gear mechanism turns a pointer on the scale when the band is squeezed to record the amount of pressure exerted. This type of strength testing instrument is still in common use today, although fancy electronic versions will probably soon replace them.
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