| Distance of Optical Path | 27 cm |
|---|---|
| Magnification | Swing-in Magnifier: 1.8x BN3 Binocular: 3x, BN8A Binocular: 8x |
| Field of view of stereoscope | 18 x 23 cm |
| Field of view of binocular | BN3: 70 mm, BN8A: 27 mm |
| Range of eye-span | 55 to 75 mm |
| Weight | 4.0 kg (8.8 lbs.) |
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