CH. I] MAGIC LANTERN WITH DIRECT CURRENT 

 1O CENTIMETER RULE 



27 



The upper edge ts m millimeters, the lower in centimeters. 



FIG. 9. SCREEN IMAGE OF A LANTERN SLIDE CORRECTLY INSERTED 

 IN THE CARRIER (FiG. 6-8). 



ni j9/v\O[ aq; 'sj3j9tni[[im ui si aSpa aaddn 



FIG. 10. LANTERN SLIDE IMAGE, WRONG EDGE UP. 

 3.IUH H3T31/:iTtt3O OI 



ni iswol ?d) .aisJarnillim ni zi sg 

 FIG. ii. LANTERN SLIDE IMAGE, FACING IN THE WRONG DIRECTION. 

 JJJG nbbei. eqSc 12 lu mi]]inj&(Gi.3' rpG JOMGL in CGnfiraGfGi.3' 



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. 11 would 

 appear erect. 



