. Elementary and dental radiography / by Howard Riley Raper . Fig. 325. Piatt changer. 326), which latter is simply a large plate changer made into a table. Theprinciple of all plate changers is the same. The part being radiographedrests undisturbed on a window of celluloid or thin aluminum, while theplates slide beneath in a tunnel. STEREOSCOPIC RADlOCRARHY .V»i. Fig. 326. Stereoscopic table and tube stand. H, centering rod. The plate changer illustrated in Fig. 330, and explained by diagram inFig. 327, differs from others in that only one five by seven inch plateis used, two pictures, five b
. Elementary and dental radiography / by Howard Riley Raper . Fig. 325. Piatt changer. 326), which latter is simply a large plate changer made into a table. Theprinciple of all plate changers is the same. The part being radiographedrests undisturbed on a window of celluloid or thin aluminum, while theplates slide beneath in a tunnel. STEREOSCOPIC RADlOCRARHY .V»i. Fig. 326. Stereoscopic table and tube stand. H, centering rod. The plate changer illustrated in Fig. 330, and explained by diagram inFig. 327, differs from others in that only one five by seven inch plateis used, two pictures, five by three and one-half inches, being made oneither end of the plate. A five by seven stereoradiograph (both pictureson the one plate) may be observed with a hand stereoscope (Fig. 322),while all other plate stereoradiographs must be observed with the specialstereoscope (Fig. 323). 302 DENTAL RADIOGRAPHY
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