Just realized my $40 laser thermometer beats the old heat crayons on preheat checks

Olivia Anderson · 2026-09-17T10:50:02.590978+00:00

Watched a guy in Houston hit 412F on a tube sheet with a laser while I was still waiting on crayon marks to melt, and we've switched the whole crew over since the readings match the TC every time, so has anyone found a spot where the laser still lies to you?

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Just realized my $40 laser thermometer beats the old heat crayons on preheat checks | Boilermakers - The Community Guide