also carries the aiming telescope. Commercially available glass plates 
or cut film (4 in x 5 in) are used. Extension tubes and focusing discs 
can be fixed to the wide-angle or normal-angle cameras for quick change 
from a fixed focusing distance to other distances. Instead of the camera 
support, a theodolite can be placed in the tribrach for entering the 
control points. 
The Wild P 32 Terrestrial Camera has been used successfully for years. 
Some special features of this tried and proven instrument are its high 
image quality, easy operation, choice of base length and the ease of 
combination with the Wild T1, T16 and T2 theodolites. It is flexible, 
small, light and easy to use. It takes glass plates and cut film in 
commercially available size (6V2 cm x 9 cm) as well as roll film. Like 
the P31 Universal Terrestrial Camera, the P32 is corrected for the 
visible and near infra-red spectral range so that it can be used with 
panchromatic, infra-red, colour and false colour films. The principal 
distance of the P32 is 6.4 cm. For close-range photography, the PBA 32 
Base Bar was designed to take two cameras with base lengths of 20 cm, 
30 cm and 40 cm. 
The Wild C 120 Stereometric Camera has been used for many years in 
police work. It consists of a base bar, at the ends of which are mounted 
two cameras 120 cm apart. The identical cameras have practically distor 
tion-free wide-angle lenses f/8, f = 6.4 cm. The cameras take glass 
plates 6V2 cm x 9 cm. Corresponding to their base length, the objectives 
of the C 120 cameras are fix focused at 10 m. This covers the close-up 
range which is so important for police photography and plotting. The 
rigid connection between the two cameras at a fixed distance and the 
parallel camera axes, or the right angle they form with the base line, 
postulate a photographic order corresponding to the most common case 
in photogrammetry, the so-called normal case. The normal case involves 
extremely simple photography and plotting conditions. However, the 
fixed base means that the stereometric cameras have a limited range. 
The photographs are plotted either in a special plotter, used exclusi 
vely in terrestrial photogrammetry, or in a universal plotter which is 
fitted with a switch device - for switching the y and z movements - for 
use in aerial and terrestrial photogrammetry. 
Description of the plotters 
The Wild A 40 Wide-Angle Autograph belongs to that group of special 
instruments which can be used only in terrestrial photogrammetry. 
Its principal distance range of 54 mm - 100 mm covers the best kown 
stereometric and terrestrial cameras. The Wild A 40 can be fitted Q 
with a transformation gearbox for plotting from photographs at 30 
or 60° above or below the horizontal. There are numerous advantages 
to architectural photogrammetry accruing form its ability to plot 
in the horizontal (xy-), the vertical (xz-) and the side elevation 
(yz-) planes. 
The Wild A 10 Autograph can plot at all scales from vertical normal, 
wide and super-wide-angle photographs as well as from terrestrial 
photographs. The usefulness of this type of plotter in terrestrial 
photogrammetry has been repeatedly proven. Depending on the camera