TM 9-243
USING AN EXPANSIVE BIT
NOTE
Expansive bits are available in two
sizes, one from 5/8 inch to 1-3/4
inches and the other from 7/8 to 3
inches.
1.
Loosen retaining screw (1). Slide adjustable
blade (2) to the desired width using built-in scale
(3) or a 6-inch machinist's rule.
2.
Tighten retaining screw (1) and refer to "USING
A BRACE" steps 1 through 5, page 23-3.
CARE OF MANUAL DRILLS
Apply a light coat of oil to all metal surfaces. With a
rag, clean gear teeth of dirt, wood and metal shavings
and apply a light coat of oil. Hang manual drills on a
rack or store in a safe, dry place.
23-4
