Temperature Indicator Stick Accuracy +/-1 Percent F +/-3 Percent C Container Type Stick Indicator Temperature 250 Degrees F Standards ANSI/ASME Code B32.1 and B31.3 ASME Code Sec. I III and VII AWS D1.1 NIST Traceable Compatible Material Type Iron Steel Includes Adjustment Ring Protective Holder Shirt-Clip Process Annealing Interpass Temperature Monitoring Post-Weld Heat Treating Pre-Heating Stress-Relieving Tip Width 3/8 in