The method here described was devised to make a permanent record of the shape and size of the hands of children. The purpose was to obtain (1) a record on which proportions could be measured for the study of pathologic cases; (2) records for future reference and comparison, and (3) a picture that could be utilized for teaching purposes.
We have found that suitable shadowgraphs can be easily obtained in the following way: The hand is firmly placed with palms down over a sheet of sensitized printing paper (Eastman's "velox"). A 110 volt, 100 watt Edison mazda incandescent lamp is then placed 48 inches directly above the middle axis of the hand, and the sensitized paper is exposed for a period of ten seconds. This procedure should be carried on in a dimly lighted room. The print is then developed with the usual developing and fixing reagents.
The method will
HOEFFEL GN. A SHADOWGRAPH METHOD OF RECORDING OUTLINES OF HANDS. Am J Dis Child. 1923;26(3):280-284. doi:10.1001/archpedi.1923.04120150087009