Lot of 3 Assorted Microscope Heads -AS IS- DAMAGED- Olympus, Parco & Selopt Olympus VMZ 1x - 4x Zoom: zoom knob adjustment does not change image in eyepiece tubes Parco EMZ 0.8x - 4.5x: Zoom adjustment changes right optic only, left optic is statically open Selopt EMD: no zoom adjustment, both eyepiece tubes pass light
