BGS 74247 Screwpitch Gauge and Thread Template Metric M3 M20, 0.5 13.00 mm

useful helper that should not be missing in any toolbox | for fast and accurate determination of dimensions of screws, bolts, drills, washers and other round materials multifunctional tool in manageable size and flat card format | for use in the workshop for vehicle repairs where corresponding sizes must be determined exactly thread size on screws and bolts: M3 - M4 - M5 - M6 - M8 - M10 - M12 - M14 - M16 - M18 - M20 | thread pitches on screws and bolts: 0.5 - 0.7 - 0.8 - 1.0 - 1.25 - 1.5 - 1.75 - 2.0 - 2.5 - 3.0 mm diameter of drills: 0.8 - 1.0 - 1.2 - 1.5 - 2.0 - 2.5 mm | inner diameter of holes and outer diameter of round materials: 1 - 13 mm measurement of lengths: 1 - 70 mm | angle measurement: 0 - 180° (5° steps), Weight: 0.4188782978 pounds, Manufacturer: BGS