[boblongtv]

What is a pyrometer?

 

[itschristorres8]

you see it on diesels, i wouldnt even consider it on your car. some exhaust gas gauge. my pops has it on his truck

 

[lcorriveau3]

They are used for EGT (exhaust gas temperature) monitoring on diesel engines.

 

[99 BLUE V6]

They Are Also Used On Engine Dyno's A Lot