A range of accurately milled gauges designed to check internal and external thread forms. Available in metric and imperial sizes.
Metric Sizes - (mm)
Type 801 metric - 3.0, 2.5, 2.0, 1.9, 1.8, 1.75, 1.7, 1.6, 1.5, 1.4, 1.3, 1.25, 1.2, 1.1, 1.0, 0.9, 0.85, 0.8, 0.75, 0.7, 0.65, 0.6, 0.55, 0.5, 0.45, 0.4, 0.35, 0.3, 0.25.
Type 804 Combination set of Whitworth as No. 800 plus SI metric - 7.0, 6.5, 6.0, 5.5, 5.0, 4.5, 4.0, 3.5, 3.0, 2.5, 2.0, 1.75, 1.5, 1.25, 1.0, 0.9, 0.8, 0.75, 0.7, 0.5, 0.4.
Type 809 ISO metric - 6.0, 5.5, 5.0, 4.5, 4.0, 3.5, 3.0, 2.5, 2.0, 1.75, 1.5, 1.25, 1.0, 0.8, 0.75, 0.7, 0.6, 0.5, 0.45, 0.4, 0.35.
Imperial Sizes-(in)
Type 798 BA - 0BA to 10BA
Type 799 American National - 4, 4.1/2, 5, 5.1/2, 6, 7, 8, 9, 10, 11, 11.1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42.
Type 800 Whitworth - 4, 4.1/2, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 16, 18, 19, 20, 22, 24, 25, 26, 28, 30, 32, 36, 40, 48, 60.
Type 806 Unified - 4, 4.1/2, 5, 5.1/2, 6, 7, 8, 9, 10, 11, 11.1/2, 12, 13, 14, 15, 16, 18, 20, 22, 24, 26, 27, 28, 30, 32, 34, 36, 38, 40, 42.