A simple "orchidometer" for measurement of testes of boys.
D000293:Adolescent; D000886:Anthropometry / Q000295:instrumentation*; D005260:Female; D006801:Humans; D007006:Hypogonadism / Q000175:diagnosis*; D008297:Male; D011629:Puberty, Precocious / Q000175:diagnosis*; D013737:Testis