Band books

2. A kind of pin drill with the cutting
edge or edges normal to the axis; -- used for enlarging a hole,
or for forming a flat-bottomed recess at its mouth.

Coun`ter*bore" (koun`t?r-b?r"), v.
t. To form a counterbore in, by boring, turning,
or drilling; to enlarge, as a hole, by means of a
counterbore.

Coun"ter brace` (br?s`). 1.
(Naut.) The brace of the fore-topsail on the leeward
side of a vessel.

2. (Engin.) A brace, in a framed
structure, which resists a strain of a character opposite to that
which a main brace is designed to receive.

&fist; In a quadrilateral system of bracing, the main
brace is usually in the direction of one diagonal, and the
counter brace in the direction of the other. Strains in
counter braces are occasioned by the live load only, as, in a
roof, by the wind, or, in a bridge, by a moving train.

Coun"ter*brace`, v. t.
1. (Naut.) To brace in opposite
directions; as, to counterbrace the yards, i.


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