On the eve and during the Second World War, the Gotovalnya plant produced parts of the Katyusha RS, quadrants, and 7 types of drawing preparations.
In the late 1990s, the Gotovalnya plant was liquidated and is now an office center.
The body of the mechanical quadrant KM-1 is made of cast aluminum, the sole is made of steel.
The measurement range of the KM-1 quadrant is 0… 90 angular degrees at the division price - 1 angular degree.
A rare mechanical quadrant is a typical example of civilian products of a typical Soviet defense enterprise.