REGARDING Temperature indicator paint, strips etc.
Omega Engineering carries a full line of temperature indicating labels, crayons, pens, paints, etc. A typical example is a label with several spots that perminently change color at successive 10 deg. F temperatures. I'm looking at section F, "Indicating Labels and Cements" in their 1995 edition of "THE TEMPERATURE HANDBOOK". Contact Omega at: P.O. Box 4047 Stamford, CT 06907-0047 USA Phone (U.S. & Canada) 1-800-826-6342 Phone (international) 203-359-1660. Omega also has offices in several European countries. I've used a few of these type products. Accuracy is only fair, but they're very handy and provide a simple way of monitoring spots which are not easily accessible during test.
