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Cs-137 Calibration Unit



Does anyone have information on Cs-137 calibration units of the following type?

NEMS-Clarke, Inc.
Silver Springs, MD
Model# AN/UDM-1A
120 Curie (~10/64)

The unit sits on a tripod, and can be used radially.  I believe it was origin-
ally manufactured for the Navy for shipboard calibrations.  I called Silver
Springs, but there is no Maryland listing for NEMS-Clarke, Inc.

Any input will be appreciated...

Erick Lindstrom
Montana State University
avrel@TREX.oscs.montana.edu
(406) 994-2108