1) Counting instrument
Found on
https://www.crosswordclues.com/clue/survey-meter
Survey meters are portable radiation detection and measurement instruments used to check personnel, equipment and facilities for radioactive contamination, or to measure external or ambient ionizing radiation fields (to evaluate the direct exposure hazard). The hand-held survey meter is probably the most familiar radiation measuring device to soci...
Found on
http://en.wikipedia.org/wiki/Survey_meter
No exact match found.
