Cosmic ray monitoring device

A cosmic ray monitoring device was a device used for monitoring cosmic rays. It resembled an orange box.

In the 1970s, Dr. Tyler used a cosmic ray monitoring device in his research; he claimed it was the most advanced device of its kind between "here" and Cape Kennedy. He used balloons to carry it into the atmosphere. During one experiment, it picked up Omega's anti-matter organism before coming down in Minsbridge Wild Life Sanctuary, where it was found by Arthur Ollis, the game warden. Dr Tyler retrieved it and took it to UNIT HQ, where the organism escaped. (TV: The Three Doctors)