What device is hidden beneath the thermal insulation covers? It may not seem like much, but it is labour-intensive: starting from the time a technician needs to take measurements, through accounting for openings for outgoing cables and sensors, and finally installation. The measurement head on the furnace, which we will be discussing today, consists of many components of various shapes and configurations. A great deal of thought is required to ensure that no element interferes with another, and the angle of inclination must be taken into account during the design stage.