MHA participant at this week's masonry heater build uses a HDE Temperature Gun Infrared Thermometer w/ Laser Sight
He uses it to peer into the peep hole of the lime kiln to measure the temperature.
The limestone material needs to reach very high heats in order to transform and become usable for making lime putty.
Another temperature gauge uses a probe.
The results tell Steve that the furnace is reaching temperatures up to 1500 degrees.
Lars Helbro of www.stenovne masonry heaters
uses a different device to measure his creation.
His masonry heater worked so well it forced all the smoke through brick and stone channels and then through pipes and down a hill, finally exiting well below the fire box.
The smoke was cold when it came out the pipes.
Jerry Frisch and Norbert Senf used these