Tri-Scribe: This versatile flat lying trammel head set includes two heads that will attach to nearly any metal rule, combination, or try square. Strike perfect arcs, circles and parallel lines, or use it as a marking gauge. Attaches to any metal rule or square blade up to 3/32" thick, and less than 2" wide. Set includes: 2 metal trammel heads, wo steel scribes, and one Tri-Blade Accessory pack per set.
Tri-Blade Accessory: Converts Tri-Scribes to an ultra-precise marking gauge or veneer cutting tool by replacing a scribe with this simple blade holder. The holding post positions the blade at the proper angle for a perfect cut. Tri-Blade Accessory includes blade holding post, hex key, and a strip of disposable cutters. England.