Dia
f
aperture
6
10
2.9
3.0
5
9
18
2
4
8
13
1.5
3
6
9
1.0
2
6
4
1.0
A: Eyelens and shade; B: body tube with field lens; C: objective snout. All lenses are biconvex. Eyelens dia=1.6cm, f=3.2cm. Field lens dia=2.9cm, f=6.0cm
Objectives are all single biconvex lenses set in a concave mount. The top aperture piece holds the lens in place.
There are five lenses included with this instrument.
Objective specifications.