Year | Hlu- | z-mo- | Photo 
Designation / Manufacturer approx. Reference | mina- | tion?) | size?) 
| tion!) | 
Gasser Projector 1915 . | German Patent No. 306385 | t T 0 
Precresse Projector 1921 | French Patent No. 537740 | t p 0 
Goerz-Boykov Triangulator 1921 | German Patent No. 384520 t T O 
Nistri Photocartograph 1922 | German Patent No. 382190 t T O 
Poivilliers Double Projector 1923 French Patent No. 578344 t T O0 
Hugershoff Aerosimplex 1929 BuL 1930, pp. 183-188 t P V 
Zeiss-Bauersfeld Multiplex 1931 BuL 1933, pp. 173-175 t T V. 
Nistri Photomultiplex 1934 Photogrammetria 1941, t T V 
pp. 46-51 
Steinheil Combined Camera and 1938 German Report in Int. Archives| t p O 
Plotter of Photogrammetry, 1938 
Williamson-Ross Multiplex 1938 Phot. Eng. 1949, pp. 386-394 t T V 
Mapping Equipment 
Bausch & Lomb Multiplex 1940 Phot. Eng. 1949, pp. 426-430, t T V 
Soviet Multiplex Vermessungstechnik 1955, p. 91 T: V 
Kelsh Plotter 1947 Phot. Eng. 1947, pp. 121-126 t/p T O0 
Twinplex Plotter 1950 US Geol. Surv. Circ. 82, 1950 t T V 
Bausch & Lomb ER 55 (Balplex) 1951 Phot. Eng. 1953, pp. 71-82 t T V 
Bausch & Lomb 720 Plotter 1952 Phot. Eng. 1954, pp. 637-639 p T O 
Zeiss Duplex 1952 — t P 0 
Williamson LSP Plotter 1953 Photogrammetria 1953/54, p T O 
pp. 108-115 
Super wide-angle Multiplex Vermessungstechnik 1955, t m V 
by Viktorov p. 126 
PSC-Gamble Stereoplotter 1955 Can. Surv. 1956, pp. 275-218 t P V 
(later T 301 Stereoplotter) | 
Richter-Askania Stereoplotter 1955 BuL 1956, pp. 89-94 t T O 
Jena super wide-angle Multiplex 1957 Vermessungstechnik 1960, t T V 
pp. 105-110, pp. 127-131 
Nistri Photomapper 1957 Manual of Photogrammetry p T O 
(Stereocartograph VI) 1966, p. 578 
Keuffel & Esser-Belfort-AMS 1960 Phot. Eng. 1960, pp. 657-660 p T O 
M2 Stereoplotter 
Kern PG1 1960 Catalog p T Oo 
Fairchild Halcon Plotter Phot. Eng. 1962, pp. 480—484 
Wild WH6 Plotter 1964 Int. Arch. Phot., Vol. XIV, t T V 
Part 4, p. 8, 1964 
ERDL Military High Precision Manual of Photogrammetry p T 0 
Plotter | 1966, p. 577 
Keuffel & Esser 5020 Stereoplotter Catalog p T 0 
Keuffel & Esser CE 101 Stereo- 1965 Catalog P T 0) 
plotting System 
OGM Stereoplotter 1967 Catalog p T 0 
SFOM Photocartograph, Type 690 1967 Catalog p T O 
(Nistri Photocartograph VI) 
Zeiss DP—1 Double Projector 1967 BuL 1967, pp. 225-234 t P O 
  
1) t = total, p = partial 
2) T = plotting table, P = projector 
3) O — original, V = reduction 
In addition, certain features were taken over from the Duplex (Fig. 1) developed at Oberkochen 
in 1952, an instrument with provision for bz and by. 
17