Beam Compass by Rotape
Self-contained retractable metal beam calibrated for inches and millimeters. Accepts standard 2mm drafting lead (included). Creates circles up to 72" in radius. Great time and money saver in the layout of custom mill work on the job and much more. Unlimited uses include custom windows and grilles tables trays stools turned wood bowls drafting sheet metal signs vent and sewer pipe openings cabinets wood crafts rough openings fabric stitchery apparel designs furniture cases and boat building.