Beckman Model 103 Charger (late 1940s/early 1950s)

Beckman Model-103 Charger

This charger was manufactured by the Arnold O. Beckman company of South Pasadena sometime in the late 1940s or early 1950s. It was designed to be used with direct reading pocket dosimeters. In 1952, the Model 103 was replaced by the Model 103A, a smaller unit that only required a single D cell battery.

Case: 5 1/4" high x 5 1/2" long  x 1 7/8" wide cast aluminum

Weight: 2 lbs.

Light: 2.2 volt flashlight bulb

Battery: One 1.5 volt D cell and six 22 1/2 volt

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-9B.