or along a solid with which it is in contact.

Caliper. An instrument for spanning inside and outside
dimensions.

Centripetal. The force which tends to draw inwardly, or to the
center.

Centrifugal. The outwardly-moving force from a body.

Centering. To form a point equidistant from a circular line.

Chloride. A compound of chlorine with one or more positive
elements, such as, for instance, salt.

Circular pitch. The measurement around a gear taken at a point
midway between the base and end of the teeth.

Circumference. The outside of a circular body.

Clef. A character placed on a staff of music to determine
the pitch.

Clutch. A mechanical element for attaching one part to another.

Chuck, Independent. A disk of metal to be attached to the live spindle
of a lathe, and which has on its face a set of dogs
which move radially independently of each other.

Chuck, Universal. A disk to be attached as above, provided with dogs
which are connected so they move radially in unison
with each other.

Classified. Arranged in order, in such a manner that each of a
kind is placed under a suitable heading.

Clearance. To provide a space behind the cutting edge of a tool
which will not touch the work being cut.

Consistency. Harmonious; not contradictory.

Coherer. That instrument in a wireless telegraphy apparatus
which detects the electrical impulses.

Commutator. The cylindrical structure on the end of an armature,
which is designed to change the polarity of the
current.

Concentrated. Brought together at one point.

Coinage. The system of making money from metals.

Compound. The unity of two or more elements.

Constant. Being insistent and consistent; also a term to be
used in a problem which never varies.

Conversion. The change from one state to another.

Cone. A body larger at one end than at another; usually
applied to a form which is cylindrical in shape
but tapering, from end to end.

Compression. The bringing together of particles, or molecules.

Convolute. A spiral form of winding,