Metric & Whitworth Thread/Screw Pitch Gauge

51 blade Whitworth and metric screw pitch gauge. Can be used to measure metric and whitworth thread pitches. The whitworth leaves can also be used to measure threads per inch on AF threads. Pictures shows 2 x items but this is just to represent that it is metric and whitworth measurements (only one is provided with this sale). Suitable for use in automotive and engineering industry whenever there is a need to measure thread pitches. Can measure Metric pitch and threads per inch. (TPI) Measures internal and external threads with 51 folding leaves. Very handy when choosing a tap or die or when selecting bolts. Includes; Metric Pitches; 0.25 / 0.3 / 0.35 / 0.4 / 0.45 / 0.45 / 0.5 / 0.6 / 0.7 / 0.75 / 0.8 / 0.9 / 1.0 / 1.25 / 1.5 / 1.75 / 2.0 / 2.5 / 3.0 / 3.5 / 4.0 / 4.5 / 5.0 / 5.5 AND 6.0 Threads per Inch; 62, 60 1/16, 48 3/32, 40 1/8, 36, 32 5/32, 30, 28, 26, 25, 24 3/16, 22, 20 1/4, 19, 18 5/16, 16 3/8, 14, 13, 12, 11 5/8, 10 3/4, 9 7/8, 8 1, 7 11/8 11/4, 6 13/8 11/2, 5 15/8 13/4, 4.5 17/8 2, 4 21/4 21/2