e of late to pro- other make a cluster of three pin holes arranged about X-ray shade of the foreign body in question, by means duce stereoscopic X-ray diagrams, and to determine of two special pinions. The millimeter scale plays as the angles of an equilateral triangle, and at a dis- tance of about… … process will be a little more complicated: they are made may be considered as nearly parallel and a tolerably good image of the hole will be formed The right eye having been closed, the glass scale THE X-RAY STEREOSCOPE INVENTED BY BR. GILLET should be so adjusted by means of the left eye that even…
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