Overall: 13 x 5 1/2 x 2 1/4 in. ( 33 x 14 x 5.7 cm )
Wooden brace or bitstock composed of a curved stock with a revolving circular knob on one end and a drillbit sokcet on the opposite end.
Gift of Dr. John H. Thompson
Due to ongoing research, information about this object is subject to change.