Trapezoidal steel thread gauge, for 30° threads, 2 - 12 mm. Supplied = assembled. Length = 120 mm. Width = 40 mm. Measuring range = 2-3-4-5-6-7-8-9-10-12-16-20 mm. Product type = accessories for measuring tools. For threads in accordance with DIN 103. Equipped with 12 gauge blades for pitch 2 - 20 mm. Flank angle 30°. Blades made of hardened spring steel.