Category: Pic


1. A small tool which fits in the chuck of a brace or drill, and by which it is rotated— thereby cutting or boring a hole. 2. The projecting blade of a …

bimetallic element

A device formed of two metals which are bonded together, each having a different coefficient of thermal expansion; used in temperature-indicating and temperaturecontrolling devices.


1. A common Norman or Romanesque molding formed by a series of circular (but occasionally square) cylinders, disposed alternately with the notches in single or multiple rows. 2. A steel …