Testo 0560 series thermal imaging cameras testo 0560 8681 the testo 868 thermal imager makes work quicker and easier without foregoing professional thermal imaging technology as you can generate error free and objectively comparable infra red images using its handy functions the ifov warner testo 603 assist and testo scaleassist help you to avoid measurement errors and effortlessly achieve optimum setting of emissivity 603 and reflected temperature rtc for building thermography a