Mowat, Harold, 1883- · London : H. Frowde · leaf 94
upright position. The anti-kathode is first placed over or under the LOCALIZATION OF FOREIGN BODIES 79 centre of the part to be examined, and then threecentimetres to either side. This corresponds roughlyto the distance that the eyes are set apart. The plates when taken can be placed in positionon… … Fig. 24. Wheatstone Stereoscope. Wheatstone stereoscope, and consists of two planemirrors four inches square, set with their backsforming an angle of 90 degrees to each other. Theseare fixed on a vertical support which moves backwardsand forwards. Two frames, which are illuminatedfrom behind, and…
X-rays
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