Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine (1914)

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CH. I] MAGIC LANTERN WITH DIRECT CURRENT 1O CENTIMETER RULE 27 0 The upper edge is in millimeters, the lower in centimeters. FIG. 9. SCREEN IMAGE OF A LANTERN SLIDE CORRECTLY INSERTED IN THE CARRIER (Fie. 6-8). ui si 3§pa jaddn 0 H3X3PUXN3O ot FIG. 10. LANTERN SLIDE IMAGE, WRONG EDGE UP. OI 0 ni isv/ol sdi .sisJamillim ni ai ygbs laqqu FIG. ii. LANTERN SLIDE IMAGE, FACING IN THE WRONG DIRECTION. nbb€L eq&c 12 ID rojjjiniGrGig' rpc JOMGI. m 0 TO FIG. 12. LANTERN SLIDE IMAGE, WRONG EDGE UP AND FACING IN THE WRONG DIRECTION. FIGURES 9-10-11-12. LANTERN SLIDES OF A METRIC RULE FULL SIZE. The figures show the image as it appears on an opaque vertical screen in each of the four possible ways of inserting the slide in the carrier. For a translucent screen, or when a mirror is used, the slide in fig. 1 1 would appear erect.