Made of glass with polished face and ground edges. Refractive
index 1.52 approximately.
| Diameter 38mm
Focus mm |
| -01 |
50 |
| -02 |
75 |
| -03 |
100 |
| -04 |
150 |
| -05 |
200 |
| -06 |
250 |
| -07 |
300 |
| -08 |
500 |
| -09 |
1000 |
| |
|
| |
|
| Diameter 50mm
Focus mm |
| -11 |
50 |
| -12 |
75 |
| -13 |
100 |
| -14 |
150 |
| -15 |
200 |
| -16 |
250 |
| -17 |
300 |
| -18 |
500 |
| -19 |
1000 |
|
