Testo 0560 9221 temperature measuring instrument testo 0560 9221 p this 2channel differential temperature measuring instrument from testo is perfect for tests which require two simultaneous measurements and to display the delta or temperature difference the attachable temperature probes type k thermocouple enable fast temperature checks and a large temperature measuring range from 50 to 1000 deg c the measuring range is dependent on the probe type selected p p what s in the box