Four-piece sets include rule plus combination, center finding, and protractor heads. The satin-finished, hardened, 12", 18" or 24" blades have fine graduations in 8ths, 16ths, 32nds, and 64ths. The 24" set includes both a 12" and 24" blade.
All heads are precision ground cast iron, finished in black baked enamel. The combination head includes a scribe and spirit level. Furnished in a fitted, foam-lined case.
Tips for using combination and double squares: