1860-1900
GUSN-20493
Cast iron drill bit. Small screw at one end connected to larger spiral grooves that end at mid-section of drill bit shaft. Other end is tapered.
spiral bits
casting (process)
iron (metal)
Iron
Slip Cast
BIT, TWIST
Original to Castle Tucker (Wiscasset, Me.),
Unknown
1 (W) (inches)
Gift of Miss Jane S. Tucker
1998.3660
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