An inexpensive kVp penetrameter.
In this report we describe an improvement upon the design by Stanton and Lightfoot for a simple photographic null method to determine the kVp of a diagnostic region x-ray source. The new version has two primary advantages over the Ardran and Crooks design in that it is both simpler and less expensive to produce.
D003365:Costs and Cost Analysis; D011859:Radiography / Q000295:instrumentation*