2 pcs Big Trammel Head Set

These trammels are very useful for laying out the distance between two points
and for scribing circles and arcs which is beyond the capacity of ordinary
dividers. Clamping the device firmly holds the points that can be un-screwed
and replaced with a pencil holder.

Used on wood having a minimum thickness of 3/8" in conjunction with any
wood off cut between 3/4" to 1 1/2" wide.