The Prader Testicle Orchidometer Item: EZ-OM20. Consists of 12 testicle shaped numbered beads ranging in size from 1 ml to 25 ml. Pre-pubertal testicles (1 to 3 ml) are yellow, pubertal testicles (4 to 12 ml) are orange and adult testicles (15 to 25 ml) are red. The beads are compared with the testicles of the patient and the volume is read off the bead which matches most closely in size. Strong hygienic plastic material on a strong string, slides easily.

Drawstring carrying bag included.