catflap.org Online Dictionary Query

  Calipers \Cal"i*pers\, n. pl. [Corrupted from caliber.]
     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.
     [1913 Webster]
  
     Caliper square, a draughtsman's or mechanic's square,
        having a graduated bar and adjustable jaw or jaws.
        --Knight.
  
     Vernier calipers. See Vernier.
        [1913 Webster]

  Calipers \Cal"i*pers\, n. pl. [Corrupted from caliber.]
     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 draughtsman's or mechanic's square,
        having a graduated bar and adjustable jaw or jaws.
        --Knight.
  
     Vernier calipers. See Vernier.

  caliper square /kˈalɪpə skwˈeə/
   [Am.] Messschieber , Schieblehre  [Dt.] , Schiebelehre  [Ös.] , Schublehre  [Ös.] , Kaliber  [Dt.]  [veraltet]
     Synonyms: vernier calliper, vernier caliper, vernier, calliper rule, caliper rule, calliper square
  
   see: vernier callipers, vernier calipers, verniers, calliper rules, caliper rules, calliper squares, caliper squares