tal law is observed regarding the axial ray of the image andthe drawing surface, viz., that they should beat right angles. Thisis very easily accomplished as follows: The drawing board is raisedtoward the microscope twice as many degrees as the mirror is de-pressed below 450 (§ 204), then it is… … Fig. 129 Abbe Camera Lucida in position to avoid distortion. Fig. .129. The Abbe Camera Lucida with the mirror at 35°. Axis, Axis. Axial ray fromthe microscope and from the drawing surface. A. B. Drawing surface raised iozvard the microscope 20°. Foot. The foot or base of the microscope. Mirror…
Microscopy
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