# dots
Lens Dia (mm)
f
Aperture
Lens type
1
10
15
3
Bi-convex
2
9
9
2.5
Bi-convex
3
8
8
2.5
Plano-convex
-
6
3
2.0
Bi-convex
There are four objectives with this instrument. Each consists of a brass mount and a single lens. Objective magnification is designated by "dots". The objective above shows one dot.

The objectives screw into the bottom plate of a rotating nosepiece. The microscope body screws into the fixed top plate, which is mounted to the square-shaft pillar.

Rotating objective nosepiece. Leaf spring keeps tension on the lower, rotating mounting plate. Objectives 1-4 are located counterclockwise from top.
Fixed top nosepiece plate.

Microscope 132 Objectives