NSB – 3 Sighting device
The NSB-3 mortar sight is a precision optical aiming device designed for use with 60 mm and 82 mm light mortars under both day and night operating conditions.
A collimator reticle provides the aiming reference, while elevation and traverse angles are set by means of dedicated adjustment knobs and micrometer scales.
Integrated longitudinal and transverse spirit levels are used to verify the correct orientation and alignment of the mortar barrel after adjustment of the weapon.
Technical data:
| Angular division | 1/6000 and 1/6400 |
| Elevation angle scale | 0-00 to 10-00 |
| Azimuth angle scale | 0-00 to 60-00 |
| Value of division | deflection knob 1-00 deflection scale 0-01 elevation knob 1-00 elevation scale 0-01 |
| Vial sensitivity | 5´ – 7´ |
| Mass of sighting device | 0.73 kg |
| Mass of sighting device set | 1.93 kg |