DOCUMENTATION OF LITERATURE COMMISSION VI 
  
  
2 
779.14 Parts of cameras 
* did. Camera objectives. Lenses 
442 Diaphgrams. Field stops. Aperture stops 
‚143 Compensating plates (Compensate for what?) 
14A. Light filters. Filter factors. Filter holders 
«145 Mirrors and prisms 
‚146 Lens hoods and shades 
4147 Shutters (Timers, release mechanisms, etc.) 
2d. 5 Camera accessories 
151 Camera orientation devices 
+ View finder 
2 Compass 
3 Tilt indicators and recorders 
„31 Level bubbles 
«32 Gyroscopic devices 
33 Horizon cameras 
«34 Astronomical cameras 
‚4 Position indicators and recorders 
sh Statoscopes, barometer, altimeters, etc. 
152 Focusing apparatus (range finders, etc.) 
153 Material holders. Magazines for film & plates 
‚A154 Daylight lóading and changing boxes 
+155 Stands. Tripods. Supports. Mounts 
„156 Exposure meters 
«4.57 Intervalometers 
«158 Light sources 
‚16 Contact printing frames and machines 
„x Apparatus for developing, fixing, washing, drying 
«3 Retouching and finishing apparatus 
‚4 Preservation, examination, transportation apparatus 
780 Music 
790 Amusements 
800 LITERATURE 
HISTORY