VIntage Nivelir Monocular Level N10KL USSR 1981 year

Description

VIntage Nivelir Monocular Level N10KL USSR 1981 year
Level N10KL . Working condition
Optical level N-10KL with compensator and horizontal limb refers to technical levels; is intended for leveling in the high-altitude justification of topographic surveys, in engineering and geodetic surveys and in construction. The level can be used to measure horizontal angles.
The level contains an optical-mechanical compensator in a converging beam. A rectangular prism suspended on a ball-bearing suspension serves as a sensitive element of the compensator. The vibrations of the compensator are damped by an air damper. The telescope in combination with the compensator gives a direct image of objects. The tube is focused by moving the movable compensator prism in the vertical direction.
The optical parts of the objective and compensator are enclosed in a thermally insulated rectangular case. A horizontal limb with a graduated scale of divisions every 1 ° is mounted in the lower part of the level. To adjust the angle i, use the quotation screws located in the eyepiece of the tube. The level has a frictional mechanism for horizontal aiming of the telescope by hand. The pipe lead screw is missing.
Mean square error of excess measurement, mm:
- for 1 km double stroke                                                        ten
- at the station with a sighting beam length of 50 m
five
Magnification of the telescope,                                         20 times
Telephoto lens focal length, mm                                         170
Objective light diameter, mm                                                26
Pipe angle of view, '                                                              1.3
Minimum sighting distance, m                                             1.5
Filament rangefinder coefficient                                         100
The division of the circular level by 2 mm,                           '10
Scale division of the horizontal dial, '1
Compensator operating range, '                                          ± 20
The price of dividing the level by                                        2 mm:
- cylindrical
45
- round
ten
Operating temperature range, ° С                                  from -40 to +50
Weight, kg 2  (
without box)
Look carefully at the photo. All questions before the purchase.
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