Vintage tool used especially for drawing parallel lines of equal or different width, which is adjustable via the small wheels. Made in Czechoslovakia - KINEX - Mechanika Bytča plant (current Slovakia) in the 50's. Material: steel, brass, bakelite. Weight of the pen: 15 g. Length: approximately 13,8 cm. Pens are used, but in very nice condition with some visible marks of usage and longer storage. Each pen has its own original wooden storage box. Sample is in the gallery. Note that you have to pull out the iron nail on the side to open the storage box. Do not try to use any unnecessary force.