meni iH 
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Aviogon f:5.6 lens (Fig. 1). Several papers already exist on the characteristics of the Super-Aviogon 
and on practical experience made using it. On the basis of quite simple considerations, the develop- 
ment of the rest of the range of instruments has followed almost compulsorily out of the fact that a 
good super wide angle lens exists. The most important instruments evolved thus: 
Fig.1 Cross-section of the Super- 
. out of the Wild RC9 Super Wide Angle Camera, 
. a diapositive printer such as the Wild U3A or U3B, or the U4A or U4B, or the simple Wild U9 
printer now in construction, 
. the Wild A9 Wide Angle Autograph with the EK3 Electric Coordinate Printer and 
. a simple small scale plotter, the Wild B9 Aviograph. 
  
Aviogon f:5.6. Angular field 
120°. 
  
The following instruments in the Wild construction programme can also be used for the purpose of 
small scale photogrammetry: 
11. 
. a Wild HC1 Horizon Camera 
. aWild RST2 Statoscope 
. the developing and drying equipment for aerial film 
1 
2 
3 
4. a Wild ST3 Mirror Stereoscope with extra binoculars and parallax bar 
5. 
6 
7 
8 
9 
a PUG1 or PUG2 Point Transfer Device 
. a Wild STK1 Micro-Stereocomparator for measurement of the horizon pictures 
. a Wild VG1 Enlarger 
. a Wild RT1 Radial Triangulator 
. a Wild E3 Rectifier 
10. 
a Wild STK1 Stereocomparator with the Wild EK4 coordinate printer, in the case of analytica 
aerotriangulation, instead of model triangulation in the A9 
a further plotting instrument, the Wild B8 Aviograph, for plotting directly from the aerial negative, 
or from diapositives at the original size.