Tempilstik 122°F Temperature Indicating Stick 28301

Tempilstik Temperature Indicating Stick

A Tempilstik temperature indicating crayon — the industry standard for non-contact surface temperature verification in welding, heat treatment, and metalworking operations. Mark the work surface before applying heat: the Tempilstik mark changes from a solid crayon line to a liquid smear at the exact temperature the stick is rated for, giving the operator a clear, visual confirmation that the surface has reached the target temperature.

Tempilstik has been the welder's reference for preheat and interpass temperature control for over 80 years. Available across 116 temperature points from 38°C to 1,093°C (100°F to 2,000°F), with ±1% Fahrenheit accuracy (±3% Celsius). Works on steel, cast iron, stainless steel, aluminium, and most metals — as well as glass, plastics, and ceramics. Accepted by welding inspection regimes operating to AWS D1.1 (Structural Welding Code) and ASME pressure vessel standards as a valid method of preheat verification.