Old and quality ruling pen type 181 from manufacturer KINEX from the 50's used for drawing of lines. Width of the lines is adjustable via small wheel made out of brass. Handle is made out of bakelite. Blades are made from a high quality steel. For an easy cleanup after the work, you are able to unlock the blades via small steel handle. Ruling pen is used and has some small longer storage marks, but it is in general in very nice condition (please see the gallery). Length: 12,5 cm. Weight: 13 g. Date of production: 1955.