Metric : 0.75 | 1.0 | 1.25 | 1.5 | 1.75 | 2.0 | 2.5 | 3.0.

2 Thread Pitch Gauges :
SAE : 11 | 12 | 13 | 14 | 16 | 18 | 20 | 24 | 9
10 | 12 | 16 | 20 | 27 | 28 | 32
Metric : 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 | NPT 27.