Elcometer T456CF1U Ultra Scan Probe for Ferrous Substrates, Range: 0-60mils / 0-1500µm. Featuring a highly durable ‘snap on’ replaceable probe cap, the Elcometer 456 Ultra/Scan Probe is a revolutionary design which allows users to take individual readings or rapidly scan large surface areas - without damaging the probe or the coating. With a reading rate in excess of 140 readings per minute the Auto Repeat Mode can significantly speed up the inspection of large coated areas. Elcometer probes have a maximum operating temperature of 80° C (176° F) with the exception of separate ferrous probes 150° C (300° F) and Hi-Temperature PINIP's 250° C (480° F). The stated temperature is the substrate temperature, and the duty cycle of the probe must be reduced to ensure a minimal temperature build-up within the probe. All Elcometer probes are supplied with a test certificate and a set of calibration foils appropriate to the scale range of the probe.