Vintage monocular student microscope, marked "GXO" and "JAPAN," educational use.

Olympus BX40 Microscope Monocular Plan 10x 40x Tested w/ 200x Image

AmScope Kids Compound Microscope Kit Monocular 40X-1000X Upright Educational

Ken-A-Vision Microprojector X-1000-1 Projection Microscope Vintage Tested Works

Ken-A-Vision T-1201 Monocular Student Microscope 40 To 400 Power.

Ken-A-Vision TT-6S Monocular Microscope w/ Light tested

Ken-A-Vision Compound Monocular Student Microscope w/Accessories

Ken-A-Vision PrepScope Monocular Microscope w/ 4x, 10x, 40x