Optical level of the USSR "N-3" 1967.

 Functionality: the level is fully operational - the lenses are clean, but when looking inside, “snowflakes”, “frost stains” are observed along the edges of the large front lens - that is, traces of aging of the optical lens - does not affect the performance!!! The viewing center of the lens is fully visible, viewable, visibility is satisfactory. Focusing works smoothly, clearly and pleasantly. The water level is perfectly visible inside the viewing space.


DESCRIPTION

Level N-3 (Н3) precise with a level and an elevation screw. Designed for geometric leveling of classes III and IV, technical leveling, as well as for engineering geodetic work during surveys and construction of buildings and structures.


Produced approximately from 1971 to 1990.


CHARACTERISTIC

The root mean square error of measuring the excess per 1 km of double stroke is 3 mm.

Telescope magnification - 30.5x.

Field of view angle of the telescope: - vertical - 1°20'; horizontally - 55'.

The shortest sighting distance is 2 m.

The price for dividing the cylindrical level by 2 mm is 15".

The price for dividing a round level by 2 mm is 5'.

The diameter of the free hole of the telescope lens is 40 mm.

Operating temperature range from -40° to +50°С.


Your parcel will be packed as securely as possible by me personally, assuming all possible risks during transportation: falling from hands, pressure from neighboring parcels from above and on the sides, rain, snow and similar force majeure circumstances. You do not pay anything for materials and packaging of goods, packaging material is at my expense, as a bonus.

If you buy two listings at the same time, you are guaranteed to receive a gift based on the theme of your purchase, but at my discretion, depending on availability, which I will put in your package))).

If you buy three or more lots at the same time costing more than $100 per listing, a total of more than $300, then delivery and postage are at my expense.

If you buy three or more listings at the same time for less than $100 per listing, you can choose as a gift any of my listings that cost at least $1 less than the cheapest listing you bought from me.