Temperature Indicators: Sticks, Crayons, Strips & Markers for Welding, QA & Operations {Precision temperature control distinguishes consistent, code-compliant work from guesswork. In fabrication shops, foundries, refineries, power plants and paint lines, teams need quick, visible confirmation that a surface has reached a specific heat before moving to the next step. https://novasphere20.blogkoo.com/the-truth-behind-the-heat-crayons-or-welding-temperature-sticks-in-news-56126609