Trammel Head, 3" / 75mm, Includes 2 Heads, 2 Points, Pencil Socket
50A has an adjustable point for increased precision.
A spirit level indicates when the base reference surface is level - a feature not usually available on comparable protractors
Cast-Iron Bodies
Protractor heads are made of stable cast iron and finished with a choice of attractive black wrinkle finish or smooth black finish
Reversible lock bolt allows choice of which graduated side of the blade faces the operator
Tempered steel blades with accurate, machine-divided graduations
The heads are die cast with black wrinkle finish and have hardened, forged steel divider points
The points screw into the heads
Through hardened steel divider points.
