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). Year of production: 1958. Material: steel, brass, aluminium. Weight of the pen: 14 g. Length: approximately 12 cm. Pen is used, but in very nice condition with some small visible marks of usage and longer storage. Pen is in original wooden storage box (which was originally made for the standard 291 version with the bakelite handle, this is the aluminum handle version). Actual pen 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 to avoid damage of the locking system.