pelvimeter

from WordNet (r) 3.0 (2006)

pelvimeter
    n 1: measuring instrument for performing pelvimetry

from The Collaborative International Dictionary of English v.0.48

Pelvimeter \Pel*vim"e*ter\, n. [Pelvis + -meter.: cf. F.
   pelvim[`e]tre.]
   An instrument for measuring the dimensions of the pelvis.
   --Coxe.
   [1913 Webster]