Good day ! I am trying to read a temperature on a heated cylindrical metal (steel) bar (about 15 mm in diameter) using a pyrometer. However I cannot measure the temperature on this bar. The bar has a rather dim shine on it and I think it affects the reading. Also, maybe because it has a small diameter and the pyrometer can't fix the bar for reading. How can I measure the temperature of this bar ? Thinking of maybe using electricity in my favor, but not yet willing to give up the pyrometer. Any advices ? PS : For reference : I am trying to measure the displacement at one end of the metal bar using an interferometric method (Michaelson), fixing the bar at one end and at the other one a reflective mirror. Also, do you see anything else to study here besides the displacement ? Thanks in advance !