Starrett 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 any size beam from 19 to 38mm (3/4-1.1/2in) in width.
Beam is not supplied.
2 Trammel heads, 2 small points 150mm (6in).