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]WordNet (r) 3.0 (2006):
pelvimeter n 1: measuring instrument for performing pelvimetry