Generals adjustable trammels accurately measure
and mark distances that are too great for conventional
compasses and dividers.
For layouts, marking templates, and drawing large circles.
6 (153mm) off-center eccentric points provide fine adjustments.
Points can be replaced with pencils, ballpointspens, crayons,
or soapstone sticks for marking various materials.
Clamps onto beam 5/8 to 1-1/2 (16 to 38mm) thick of any length.