JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M3.5 x 0.6 ER Mini Collet Chucks This reamer is designed to

This reamer is designed to deliver precise hole diameters with tight tolerances

it adheres to BS 328/4 standards and ISO H5 tolerance (-0 +

reducing deflection during cutting and improving accuracy on challenging surfaces

helping you achieve repeatable accuracy across production runs

71 mm reach) to handle demanding holes

JBO Thread Ring Gauge (NoGo) - Metric Coarse - Left Hand - 6g - M3.5 x 0.6 ER Mini Collet Chucks This reamer is designed toThe JBO Thread Ring Gauge (NoGo) Metric Coarse, Left Hand, 6g, M3. 5 x 0. 6 is a precision inspection tool for verifying external thread diameters and tolerance. Its ideal for engineers, machinists, quality teams, and maintenance professionals who need quick, reliable checks during production, assembly, and repair work. Made from hardened steel for outstanding durability, this NoGo gauge resists wear in busy workshops and long shifts. Its simple, user