Phrenological (Spreading) Calipers
1820-1850
Glogau's Vernier calliper ('Minnesota skin calliper') modified
1953
Prototype measuring calliper for radiographs
1957-1963
Calliper used for measuring radiographs
1970-1979
Anthropometric calliper in canvas roll
1930-1948
Pair of callipers for measuring radiographs
Pair of chest callipers, England, 1950-1965
1950-1965
Caliper for measuring human skulls, United States, 1999
1999
Skin thickness callipers used in the Harpenden Growth Study
1950-1959