Pattern maker's tool

Collection object

Flat plate, straight edge, long axis 4.0 Curved edge 4.1 W. max 3.2 L. short sides 2.8 H. curved plate 3.0 T. 0.1 Radius handle 2.8 T. handle 0.2
Pattern makers tool of J Finnan. Iron. Consists of two plates of metal joined at right angles, with an internal handle centrally at right angles to the long axis. One of the plates is flat, rectangular with one convex edge. The other is curved, sitting on and matching the convex edge of the flat plate, the two welded with copper or bronze, the outer edge of the angle of join sharp. The handle is a quarter circle plate of iron, copper or bronze welded, extending to the edges of the plates.