Stainless steel multifunction thread/pitch identification gauge. Easily identify the size of bolt, drill bit or tap that is required. Checks the thickness of washers and diameter of electric wire. Use as a set square, to measure angles 0-180° and as a ruler. Features & Benefits:Stainless steel metric multifunction thread/pitch identification gauge.Pitches: 3, 2.5, 2, 1.75, 1.5, 1.25, 1, 0.8, 0.7, 0.5mm.Bolt Screw Diameters: M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20.Wire Gauge: 0.8, 1, 1.2, 1.5, 2, 2.5mm.Square: 15°, 30°, 45°, 60°, 90°.Bolt Screw Length: 0-7cm.Tap/Drill Recommendation: M3-M20.Checks the thickness of washers and diameter of electric wire.Model No. MGM1 Specifications: Model No MGM1 Brand: Sealey Nett Weight: 137.5g Bolt Screw Diameters: M3, M4, M5, M6, M8, M10, M12, M14, M16, M18, M20 Pitches: 3, 2.5, 2, 1.75, 1.5, 1.25, 1, 0.8, 0.7, 0.5mm (tpi) Square: 15°, 30°, 45°, 60°, 90° Tap/Drill Recommendation: M3-M20 Wire Gauge: 0.8, 1.0, 1.2,