Curv-O-Mark Multi Trammel Head Set (J1890)
Trammel points are the most accurate means of drawing arcs and circles because you can lock the radius tight.
Space saving tool leaving plenty of room in your tool box by taking just the points around. You can use any standard 1/2" pipe or conduit that you can find on any job site to create the radius you need.
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The heads feature radius set points cast in alignment with marking pointers for easy setting. Each is equipped with 1/4" screws and squared on the back side for perpendicular alignment.
The stationary head holds a 1/4" case hardened centre point. The moveable head has a 1/8" steel scribe hardened to 59 Rockwell.
The chalk holder will accept round, square or flat soapstone crayon, pencil or steel point scribe.
Marks from 1-1/2" circle to any diameter needed, depending on length of pipe used as a trammel bar. You can attach several lengths of pipe or conduits together to form very large arcs.
Heads are made from durable aluminium. Each set weighs approximately 8 oz.
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