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Bi-convex lens fitted in nickel plated metal frame with metallic handle.
Diameter Focal Length Magnification
| Cat. No. |
Dia. (mm.) |
Focal Lt. (cm.) |
Magnifi. |
| A |
50 |
10 |
3.5x |
| B |
50 |
15 |
2.5x |
| C |
50 |
20 |
2.25x |
| D |
60 |
10 |
3.5x |
| E |
60 |
15 |
2.5x |
| F |
60 |
20 |
2.25x |
| G |
75 |
10 |
3.5x |
| H |
75 |
15 |
2.5x |
| I |
75 |
20 |
2.25x |
| J |
90 |
20 |
2.25x |
| K |
100 |
15 |
2.5x |
| L |
100 |
20 |
2.25x |
| M |
125 |
30 |
2.25x |
| N |
150 |
30 |
1.83x |
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