Pilot Ruler Soviet Navigation line NL-8 aeroline VMF

Description

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Attention!
no top lid from the box
RARE Soviet Military Navigation pilot ruler of 1946 Original NL-8
Model NL-8, presented in the exposition, appeared in 1943 and was produced until the end of the 1950s.
In aviation, this ruler was used to calculate the speed and altitude of the flight, the distance traveled, the correction of bombing, determining the parameters for photography, and many other calculations.
The ruler consists of three parts - the body, the slider (the movable central part) and the sight (a transparent tape sliding along the ruler).
On the front and back sides, various scales for measurement are applied.
The principle of operation of the ruler is based on the correct combination of the scales of the body and the engine.
The slide rule was a typical tool not only for aviators and sailors, but also for designers and engineers in the rocket and space industry.
Numerous calculations, for example, related to the design of space technology or the calculation of flight trajectories, were carried out using slide rules and adding machines (mechanical computers).
The launch of the first artificial Earth satellite in 1957, the first manned flight into space in 1961, the missions of interplanetary automatic stations to Venus, the Moon and Mars - all these achievements in space exploration were made even before the spread of electronic computers and calculators, the first samples which did not differ in high reliability and speed of calculations.
The exhibit was donated to the Museum of K. E. Tsiolkovsky, Aviation and Cosmonautics in 1993 by Alexander Kungurtsev, a veteran of the aviation of the Kirov region.
He was the first in the region to make a parachute jump (in 1935), was one of the founders of the Kirov Aviation Sports Club, a participant in the Great Patriotic War, a retired lieutenant colonel.
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