CALIPERS n.
An instrument, usually resembling a pair of dividers or compasses with curved legs, for measuring the diameter or thickness of bodies, as of work shaped in a lathe or planer, timber, masts, shot, etc.; or the bore of firearms, tubes, etc.; -- called also caliper compasses, or caliber compasses. Caliper square, a draugh…
CARDINAL a.
called ordinal numbers. -- Cardinal points (a) (Geol.) The four principal points of the compass, or intersections of the horizon with the meridian and the prime vertical circle, north, south east, and west. (b) (Astrol.) The rising and setting of the sun, the zenith and nadir. -- Cardinal signs (Astron.) Aries, Lidr…