38 
HISTORICAL EXHIBITION 
Exhibit 34 British automatic, film, aerial camera, type F, 1915. 
Designed to take a series of photographs at regular intervals of about 
12 seconds upwards. The film drive was operated by a small airscrew. 
Simultaneously with the view of the terrain below, the camera records 
on the film the readings of a compass needle, an aneroid barograph, and 
an exposure counter. 
(Lent by the Williamson Manufacturing Co Ltd, England). 
Exhibit 35 Santoni aerophotogrammetric camera, mod I, 1921. 
A double camera with 30° tilt between the two optical axes. It is equipped 
with the first type of solar perioscope. 
Focal length, / = 21 cm; picture size, 13 X 18 cm. 
(Lent by the Istituto Geografico Militare, Florence). 
Exhibit 36 Von Bassus’ hand-held aerial camera, 1902. 
Long-focus hand camera for photogrammetric reconnaissance by air. 
Objective - Tessar 1 : 10; focal length f — 41 cm. 
(Lent by the Deutsches Museum, Munich). 
Exhibit 37 German hand-held aerial camera, 1914/18. 
Takes six plates 13 X 18 cm in changing boxes. Voigtlander Heliar 
/ 4.5 lens, / = 24 cm; three light filters; focal-plane shutter; focusing 
screen; direct-vision frame finder. 
(Lent by the Kodak Museum, Harrow). 
Exhibit 38 Messter’s Reihenbildner I, 1915. 
First automatic air camera for exposing air photographs in strips. 
Focal length, / = 25 cm; picture size, 6 X 24 cm. 
(Lent by the Deutsches Museum, Munich). 
Exhibit 39 Wild air-camera, C2, 1925. 
The first Wild air-camera. It is a relatively light hand-camera, but can 
also be used in a special suspension gear for vertical, inclined and con 
vergent photographs. It is operated by hand. 
The maximum distortion produced by the lens is 0.01 mm and the shutter 
speed is quite convenient for the aircraft speed of 70 or 80 mph com 
mon at that time. 
Focal length, 16.5 cm; aperture / 5; shutter speed, 1/130th sec. 
(Lent by Wild Heerbrugg, Ltd, Switzerland). 
Exhibit 40* Aerial photograph of the Avenue du Bois de Boulogne, by Nadar, 1858. 
(Lent by the Conservatoire National des Arts et Métiers, Paris). 
Exhibit 41* Two photographs of von Bassus’ ‘photogrammetrischen Flinte’ (camera 
gun), 1905. 
An historic hand-held air camera for use in balloon flights. A wooden 
camera is mounted on an ordinary fowling-piece to take oblique views. 
It is directed by means of the gun-sights. 
(Lent by the Deutsches Museum, Munich). 
Exhibit 42* Series of air photographs taken with Messter’s Reihenbildner I (exhibit 
38), 1915. 
Taken in Flanders. Picture scale, 1 : 3840; overlap, about 60%. 
(Lent by the Deutsches Museum, Munich). 
Exhibit 43* Photograph of the first Nistri air-survey camera, 1919, and of the Nistri 
photocartograph, mod 1, 1919. 
(Lent by the Ottico Meccanica Italiana e Rilevamenti Aerofotogram- 
metrici SpA). 
Exhibit 44* Panel illustrating the principles of aerial triangulation and Multiplex, 
1919.