Drafting machine

A drafting machine is a tool used in technical drawing, consisting of a pair of scales mounted to form a right angle on an articulated protractor head that allows an angular rotation.

These guides, which act separately, ensure the movement of the set in the horizontal or vertical direction of the drawing board, and can be locked independently of each other.

Typically, the machine is mounted on a drawing board with a hard and smooth surface, anchored to a base that allows its tilting and lifting.

There are special versions for A0 double-sized boards, to make large drawings, or copying-boards with background illumination, which have all that is necessary to provide specific support.

With the development of computer-aided design (CAD), the use of drafting machines, especially in the professional sector, has drastically declined, supplanted first by pen plotters, and then by large-format inkjet printers.

Drafting machine attached to a drawing board.
Drawing board with a parallel rule , a precursor to drafting machines.
Ercole Marelli offices, Sesto San Giovanni. Photo by Paolo Monti , 1963.