COMPASS n.
e under Azimuth. -- Beam compass. See under Beam. -- Compass card, the eircular card attached to the needles of a mariner's compass, on which are marked the thirty-two points or rhumbs. -- Compass dial, a small pocket compass fitted with a sundial to tell the hour of the day. -- Compass plane (Carp.), a plane, conv…
COMPRESSION PROJECTILE n.
constructed so as to take the grooves of a rifle by means of a soft copper band firmly attached near its base or, formerly, by means of an envelope of soft metal. In small arms the modern projectile, having a soft core and harder jacket, is subjected to compression throughout the entire cylindrical part.…