Inspection Gauge of Tube Fitting

Use: This is a "No-Go" gauge and should be used as follows:
1. Make up the fitting according to the following instructions: 1/4 inch (6mm), 3/8 inch, 1/2 inch (12mm) - make up 1-1/4 turns from finger tight.
2. Check gap between nut and body, using the appropriate sized gauge.If the gauge slides easily into the gap, tighten the nut further until gauge can not enter the gap.