Historical perspective: the description of Emil Hertel's exophthalmometer.
Simonsz
H J
HJ
D003941:Diagnostic Techniques, Ophthalmological / Q000266:history* / Q000295:instrumentation; D004867:Equipment Design; D005094:Exophthalmos / Q000175:diagnosis / Q000266:history*; D005858:Germany; D049673:History, 20th Century; D006801:Humans