Engineers scale measuring tape in convenient, go-anywhere size. Three-sided engineering tape measure has three 24" long coiled rule tapes inside, each with its own non-slip toggle lock and spring action return. Uniquely-shaped, durable plastic case. Bends along arcs for more accurate measurements. Engineer scale measuring tape has 6 graduations: 10, 50, 40, 20, 60, 30. Easy mobility to the field. Made in the USA.