Brass pantograph with two castors. Decorative wing nuts and screws. Of the two sliders on the inner arms, one is one of the castors and the other is meant to hold a drawing point, through a hole in its surface. Both have simple designs on the upper face. This second slider runs on arm that is slotted and graduated 2/3, 1/2-2/5, 2/5-2/7, 1/5-1/6, N-G. Left outer arm graduated 2/3, 1/2, 2/5, 2/7, 1/5, 1/6, and N over K. Right outer arm marked at 2/5, 2/7, N, 1/6 and G.