Quadrant Optical KO-1 USSR Army Clinometer 1949

Description

The optical quadrant KO-1 is designed to measure the angles of inclination of flat and cylindrical surfaces and to install them at a given angle to the horizontal plane with an error of 30 ".
Quadrant KO-1 is designed to measure the angle of inclination of flat and cylindrical surfaces, for their installation at a given angle to the horizontal plane. It is used in laboratories and workshops of engineering plants, in construction, and other industries.
It is used to verify:
corner surfaces of patterns;
sharpening angles on large cutting tools;
guiding machines and base plates;
goniometric measuring instruments.
Features:
convenient to use, universal;
has high accuracy;
has a screw with slow movement for precise installation;
has an optical reading system;
has an external scale for rough installation;
allows you to see in the eyepiece at the same time the main and micrometric scales;
eliminates the error of the eccentricity of the bilateral reference system.
Specifications:
Microscope magnification 45X
Quadrant error margin ± 30 "
Range of measurements of angles on a limb ± 120 °
Graduation scale of the reading device 60 "
The division of the scale of the main level 30 "
Graduation scale 4 '
Precision Limit Division Price 60 '
The division value of the rough limb 1 °
Deviation from flatness of the base ≤0.01 mm
Base length 148 mm
Operational temperature range from – 40 ° C to + 50 ° C
Overall dimensions -Height 13 centimeters, width 14.5 centimeters, width of the bottom 4.5 centimeters
Instrument weight 1,990 kg
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