Microscope No. 244 comes with three bi-convex objective lenses. They are mounted in a brass base, with the threads on both the inside and outside surfaces. This allows the lenses to be screwed together to increase the magnification.
|
Lens
|
Dia (mm)
|
f (mm)
|
Magnification |
| 1 |
6
|
30
|
6x
|
| 2 |
8
|
34
|
6x
|
| 3 |
14
|
40
|
4.5x
|
|
Lens grouping
|
f (mm)
|
Magnification
|
|
1+2
|
14
|
12x
|
|
1+3
|
14
|
12x
|
|
2+3
|
16
|
15x
|
|
1+2+3
|
7
|
20x
|