59A Trammel Heads
Useful for laying out and scribing circles beyond the capacity of ordinary dividers. Clamping device firmly holds points, which can be replaced with a pencil.
The heads will accommodate a beam up to 9.5mm (3/8in) thick and 19mm (3/4in) wide. Beam is not supplied. 2 Trammel heads, 2 small points 150mm (6in).