Compound ophthalmoscope, one wheel with six lens powers (including empty hole), one with ten (including empty hole). Lens wheels on separate plate stamped "GIROUX PARIS" and "BT S.G.D.G. NO 3". Lens wheel plate clips onto head of handle. Head of handle has a small prism with a sliding cover. Electrical supply runs up into head, but its use is not obvious. Current switched by a metal spring bound to the wooden handle with copper wire. Wires terminate in copper spade terminals soldered to pins. Case is probably wood, covered with leather. Push-button sprung catch.
Subject (Name):
Bernard Kosto, M.D. and Yale University. School of Medicine.