The "SCRED" R&D Prototype Survey Meter (ca. 1965-1970)
The "SCRED", produced in the early 1970s by
Thermo Electron Engineering Corporation of
Alas, this example does not appear to be in working condition.
The sensing element is a heavy metal cased cylinder
(ca. 3” in diameter and
3.25” long) located in the rear bottom of the case.
It has three controls: a range switch, button
activating a magnetic switch (to the left of the meter) and an unmarked
The Scred detector is described briefly in the 1966 List of Military and Civil Defense Devices as: "A Solid Compton Recoil Electron Detector as a batteryless dose rate measuring device for gamma radiation measurement."
Range: 0 – 5, 0 – 50, 0 – 500, 0 – 5000 R/h
Size: 4.25” x 8” x 3.25”
Carl Siebentritt, personal communication.
Defense Atomic Support Agency List of Military and Civil Defense Devices DASA 1243 revised, 1966.
Donated by the Federal Emergency Management Agency courtesy of Carl Siebentritt.
Copyright 1999, Oak Ridge Associated Universities