Spreading calipers used by Dr. Montague Cobb
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@ National Museum of African American History and Culture
Unidentified
Description
This is a spreading metal caliper with curved, rounded ends. There is a crossbar scale that slides as the rounded ends get farther apart. The small circular screw that holds the scale in place has become detached.
Metal
Collection of the Smithsonian National Museum of African American History and Culture, Gift of Dr. Michael L. Blakey