Eyepiece, Huygenian
Eyepiece, Huygenian
Compound monocular microscope, with case, made by Carl Zeiss, Jena, German
Eyepiece, Huygenian
Eyepiece, two planoconvex lenses, set close together at upper end of tube, incomplete
Objective, button
Objective from compound monocular microscope
Objective, immersion