Tempilstik's temperature indicators make marks that melt within 1% of their rated temperatures
Tempilstik temperature indicators make marks that melt within 1% of their rated temperatures. Lot numbered for NIST traceability, Tempilstik indicators are supplied in an adjustable aluminum holder with a pocket clip.
There are over 100 temperature ratings, systematically spaced between 100°F - 2500°F (38°C - 1371°C). Most can be certified to be lead, sulphur and halogen free.
Tempilstik indicators can be stroked on a workpiece from time to time during a heating operation. Below its temperature rating, the Tempilstik leaves a dry opaque chalk mark; when its rating is reached, the Tempilstik leaves a liquid smear. On cooling, the melted Tempilstik mark will solidify with a transparent or translucent appearance.