CD V-715 Ion Chamber Survey Meter (ca. 1961 - 1964)

The CD V-715 is “a high-range gamma survey meter for general post attack operational use” that employs a hermetically sealed ionization chamber. All the models (1, 1A, 1B) of the 715 were transistorized, and like other CDV ion chamber survey meters (e.g., the CD V-710), the CD V-715 had two controls: a zero adjust knob and a range switch.
While the CD V-710 and the CD V-720 had three ranges, the CD V-715 had four. This allowed the CD V-715 to span the range of both. According to the Handbook for Radiological Monitors (1963), the CD-715 superseded both the CD V-710 and the CD V-720.  When the CD V-715 was first produced (in 1961 or 1962), the government disposed of its entire inventory of CD V-710s and roughly 40% of its CD V-720s.

Power type: D-Cell.