Overall: 22 1/2 x 15 x 2 1/2 in. ( 57.2 x 38.1 x 6.4 cm )
stamped: on side of caliper: "DAVID R. GRIFFITH/Philadelphia"
stamped: on obverse of other caliper: "David R. Griffith"
Steel calipers with two curved, tapered jaws connected to two steel bolts and brass wingnuts.
Gift of Dr. Frederick Griffith
Due to ongoing research, information about this object is subject to change.