I am looking for a pyrometer/Thermometer to replace our model HFT-82 made by Anritsu. I understand that the HFT-82 is obsolete. This is used to take surface temperature. We need to be able to work with F and C and also be able to calibrate the pyrometer to a hotplate. In other owrds, if the hotplate is set to 320 degrees F and the pyrometer reads 316 degrees F, we need to be able to set the pyrometer/thermometer to 320 degrees F. Any suggestions on a replacement pyrometer/thermometer would be helpful.