Pelvimeter, external measuring calliper, Italy, 1901-1960

1901-1960 in Bologna
Francesco Rizzoli

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Modern pelvimeter, based centre design of a vernier calliper, but with extended handles, steel, by Rizzoli, Italy, circa 1930

A pelvimeter is a measuring device used by obstetric physicians. This steel pelvimeter externally measured the pelvis and assessed the size of the birth canal to assess how far along a labour was. The pelvimeter opens and the distance between the two prongs is read from a sliding scale. Obstetrics is the branch of medicine dealing with the care of pregnant women, childbirth and the period of recovery immediately afterwards.


Obstetrics, Gynaecology & Contraception
Object Number:
obstetric pelvimeter (external)
Hodgkinson, R.
Loan: Wellcome Trust

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