Details
Microscope accessories:
a fitted oak case containing two (of four) dovetailed slide-out sub-stage condensers by R. & J. Beck, another condenser with aperture wheel and eleven various eyepieces -- 12in. (30.5cm.) wide, early 20th century
a fitted oak case containing two (of four) dovetailed slide-out sub-stage condensers by R. & J. Beck, another condenser with aperture wheel and eleven various eyepieces -- 12in. (30.5cm.) wide, early 20th century