| Model | LENS SIZE | MAGNIFICATION |
| BX-50 | 5O mm/ 2″ | 2.25x |
| BX-63 | 60 mm/ 2.5″ | 2.25x |
| BX-75 | 75 mm/ 3″ | 2.25x |
| BX-100 | 100 mm/ 4″ | 2.25x |
Ravi Scientific Industries
Scientific Super Store since 1971
| Model | LENS SIZE | MAGNIFICATION |
| BX-50 | 5O mm/ 2″ | 2.25x |
| BX-63 | 60 mm/ 2.5″ | 2.25x |
| BX-75 | 75 mm/ 3″ | 2.25x |
| BX-100 | 100 mm/ 4″ | 2.25x |
