TE 650 Tempilstik Temperature IndicatorSimple - no gauges or electronics. Easy to use. Greater density. Holder provides strong grip on the chalk avoiding slippage. Maximizes user efficiency in completing the application. Holder engineered for smooth operation. Most can be certified lead and sulfur free. Accuracy: ±1%; Applications: Welding and Metal Fabrication, Preheat, Interpass, Post-Weld Heat Treatment, Annealing, Stress Relieving, Much More; Temp. Range: 650.0 °F; Type: Temperature Indicating Stick; Wt.: 0.04 lb.