Russian Soviet SURVEYING LEVEL N-3 theodolite transit surveyor 1976

Description

RUSSIAN SURVEYING LEVEL N-3
This is Soviet level N-3 made in 1976.
It was made in USSR.
It is in working condition.
Comes with its original case.
Please see actual pictures.
Level Н3
The optical level Н3 refers to the exact level with the level at the telescope; is designed for leveling III and IV classes and can be used to measure elevations in the construction of high-altitude substantiation of topographic surveys, engineering and geodetic surveys, industry and construction.
The level contains a contact cylindrical level and an elevation screw. The image of the ends of the cylindrical level is transmitted in the field of view of the tube. An optical tube with an internal focusing gives a reverse image of objects. The angle i is adjusted by the quotation screws of a cylindrical level. Leveling has a leading and clamping screws of the telescope.
SPECIFICATIONS :
The average square error of measurement of excess, mm:
- 1 km of double stroke
- at the station with a sighting beam length of 50 m
3
2
Magnification of the telescope, times 30
Field of view of the tube, '1,3
Lens diameter of the lens, mm 40
Minimum viewing distance, m 2
Thread range finder ratio 100
The price of dividing the level by 2mm:
- cylindrical
- round
15
10
Temperature range of operation, ° С from -40 to +50
Length of telescope, mm 175
CONDITION
It is in used working condition. It has  signs of age and use.