Staedtler Mars Compass Comfort 551.
· Precision compass with spring-bow head and centre wheel.
· Solid metal construction.
· Hinged lead leg and needle shoe.
· 4mm shank for accessories.
· Max circle diameter approx 265mm.
· Length 154mm.
551 02 Kit includes 551 Compass, universal adapter and spare lead box in hinged plastic case with transparent lid.