The Mars Comfort Masterbow is a precision, solid metal compass with a spring-bow head and center wheel. It also features a hinged leg joint and needle shoe. The compass is perfect for advanced students and apprentices.
The Masterbow allows a maximum circle diameter of approx. 5 1/2 in.
The 551 40 WP includes the compass and spare lead.
The 551 02 includes a hinged leg compass, extension bar, universal adapter and spare lead.