Subject ASC0003j8o
Journal of the Royal Microscopical Society.
ser.2:v.2:pt.1:no.1-3 (1882), Page 406 (1878-1968.)
New York Botanical Garden, LuEsther T. Mertz Library
BHL Page 31214271
Keywords
textile instrument silk microscope telescope eye-pieces Ulmer's silk thread movement ulmer thread movement tube microscopy eye piece guide screw pulley spring Ulmer's Silk Thread Movement Ulmer eyepiece telescope