>Forgive my ignorance..what is "temperature indicator crayons"? How >do they work? What temps do they work at? Where does one find them? The ones I use are from Eurocom. The used to have a "green" one that changes to gray at 280C, now they just have "mustard" ones that change to dark brown at 300C. They work fine after you learn to look for the shift. Been using them for several years. -John