Brass, iron, other metal
Overall: 5 x 1 1/4 x 5/8 in. ( 12.7 x 3.2 x 1.6 cm )
Brass, iron, and lead(?) calipers; brass ball grip with horizontal tab extension; one brass leg with iron tip, and one with brass upper half and detachable lower half made of lead(?).
Due to ongoing research, information about this object is subject to change.