Recording Watermarks By Beta-Radiography and Other Means
Nancy Ash · 1982
An overview of the techniques available for the recording of watermarks (rubbing, tracing, photosensitive paper techniques, transmitted light photography, low voltage x-radiography, beta-radiography) and a discussion of why beta-radiography was chosen by the National Gallery, Washington, DC. She also discusses the modifications to the basic technique which are necessary for the recording of large watermarks. AATA No.: 20-1554