AN/PDR-27S Radiac Set manufactured for the Space and Naval Warfare Systems Command by the Nuclear Research Corporation of Dover, New Jersey, housed in its metal case, measuring 12.5″ x 9″ x 7.25″, identified as "Serial J 176." The set contains its handheld radioactivity meter (with scale in "Milliroentgens Per Hour"), along with accessories and original operating/maintenance manual. The AN/PDR-27 is described by the Directory of Radiac Equipment as a 'portable, watertight, battery-operated instrument that furnishes visual and audible indication, detection and computation of radioactivity data.' In fine condition.