Cambridge Model BM 18230 Charger (late 1940s)

This charger was manufactured by the Cambridge Instrument Company Inc. of New York sometime in the late 1940s. It was designed to be used with direct reading pocket dosimeters such as the Cambridge Model BM 18050. The military designation for this instrument was the PP-527/PD.

Cambridge Model BM18230 Charger

Case: 4 1/4" x 5" x 4 3/4" black aluminum

Weight: 3 lbs.

Light: 2.2 volt flashlight bulb

Battery: One 1.5 volt D cell and six 30 volt

High voltage: 130-180 volts

Donated by Ron Kathren.


  • Campbell, Radiological Defense, Vol. IV, Armed Forces Special Weapons Project, ca. 1950, p. 60.
  • Atomic Energy Commission Radiation Instrument Catalog #2, page date July 1, 1949, p.AV-7A.