. Journal of radiology . Fig. (i. Tube holder and headrest. Wheel A raises and lowers the , tightens the head elamp. V, adjusts the headrest laterally. D, adjusts theheadrest longitudinally. E, sighting apparatus. LOCALIZATION — TITTER] NUTOX 51. Fig. 7. The sighting apparatus, which is called a telescope, but in realityis an inverted periscope. This contains, in the lower end, a mirror, set at anangle of forty-five degrees, and a cross wire. 52 Till-] JOURNAL OK RADlOUHiV

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Keywords: ., bookauthoramerican, bookcentury1900, bookdecade1920, bookyear1920