Full text: Commissions I and II (Part 3)

REPORT OF COMMISSION II: PLOTTING, THEORY AND INSTRUMENTS 
19 
loading of the plateholders the car also contains 
a well equipped photographic darkroom. Next to 
this there is another compartment serving for 
various purposes, such as storage of the camera 
carrier, photographic and other equipment. The 
car’s suspension can be locked out directly from 
the platforms to provide stable support for the 
cameras during the usually quite long exposures. 
“Some of the more interesting technical data 
are: 
Accuracy at camera-subject distances— 
20 m. (65 ft.), approx. 1 cm.; 40 m. (130 
ft.) approx. 2 cm.; 100 m. (330 ft.) ap 
prox. 5 cm. 
En-route speed during transit of survey car: 
90 km./h. (60 mph). 
Operational speed: 30 km./h. (20 mph) 
Approximate time per take (survey car in 
desired location): 2 minutes. 
“Traction is provided by an electric ‘Te’ yard 
tractor equipped with welding gear outlet 220 v, 
16§ c.p.s. supplying energy for floodlight, car 
lighting and heating. Voltage fluctuations are 
eliminated by a voltage stabilizer to ensure even 
object illumination when the floodlight is used. 
Storage batteries, recharged through rectifiers, 
provide current for the car lights. 
“The new procedures can be applied in tun 
nels as well as on the open line. Its advantages 
are for one that it is no longer necessary to block 
the parallel tracks nor to switch off the’current 
in the overhead wires, resulting in considerable 
operational advantages; also the increased effi 
ciency deserves mention—compared to conven 
tional methods a much greater number of cross 
sections can be measured in a given period of 
time. Finally there is the further advantage of 
greater coverage. 
“It may be mentioned that a photo-electronic 
scanning device is under study as a complement 
to existing equipment, to facilitate locating of 
critical cross sections.” 
Publications 
Phil. Zings—Die Anwendung det Photogram- 
metric bei der Aufnahme des alten Be 
standes für Guterzusammenlegungen. 
J. Ikle—Die Luftphotogrammetrie in der 
Grund buch Vermessung—praktische Erfah 
rungen in einer Voralpengemeinde. 
R. Conzett—Ueberblick über ein elektron 
isches Datenverarbeitungssystem für pho 
togram metrische Grundbuch Vermessung. 
A. Pastorelli—Photogrammetrische Auf 
nahme des alten Besitzstandes. 
H. Kasper—Zur Entwicklung eines einfachen 
photogram met rischen Auswertegerates. 
UNITED 
Organizations 
governmental (Federal) Questionnaires 
Mailed—18, Responded—9 
U. S. Air Force—Aeronautical Chart & In 
formation Center; U. S. Department of 
W. K. Bachmann—Methode numérique 
d’orientation de vues aeriennes quelcon 
ques dans un stereorestituteur. 
W. K. Bachmann—Developments mathé 
matiques pour l’orientation numérique de 
vues aeriennes quelconques dans un stereo 
restituteur. 
W. K. Bachmann—Utilisation de la photo- 
grammetrie et du calcul électronique pour 
la construction des autoroutes. 
W. K. Bachmann—Utilisation des calcula 
trices électroniques pour la mensuration 
cadastrale suisse. 
W. K. Bachmann—Utilisation de la photo- 
grammetries et du calcul électronique pour 
la construction de routes. 
H. Harry—La mensuration cadastrale par 
photogrammetrie; possibilities et réalisa 
tions. 
H. Harry—Fehlerhaftes in det photogram 
metrischen Praxis. Möglichkeiten einer 
Anpassung der Organization der Vermes 
sungsarbeiten and der funktionellen Fol 
gearbeiten an die neuzeitliche Entwicklung 
der Vermessungs und Rechentechnik. 
H. Harry—Die Entwicklung der Vermes 
sungsinstrumente, dargestellt an kulturel 
len Entfaltungen. 
Gegenwärtiger Stand der Automation in 
europäischen Vermessungs wesen. 
R. Conzett—Ueberblick über den Einsatz 
eines elektr. Datenverarbeitungssystems 
bei der Projektierung des Schweiz. Na 
tionalstrassennetzes. 
P. Gfeller—Methodische und organisatorische 
Fragen der Planbeschaffung. 
R. Conzett—Normen über Berechnungen fur 
die Strassenprojektierung. 
R. Conzett—Elektronisches Rechnen im 
schweizerischen Strassenbau. “Elektron 
isches Rechnen im Strassenbau und Bruck 
enbau” 
W. Altherr—Crossmasstabliche Gravur auf 
Folienmaterial. 
P. Goldschan—Luftphotogrammetrische Ho- 
henaufnahme 1:1,000 und Herstellung eines 
Photoatlasses 1:2,000 im Kanton Basel- 
Landschaft. 
B. Hallert—Bestimmung der Präzision und 
Genauigkeit eines Stereokomparators. 
STATES 
Commerce—Coast and Geodetic Survey— 
Weather Bureau—Bureau of Public Roads; 
U. S. Department of Agriculture—Forest 
Service—Soil Conservation Service; U. S. 
Department of Interior—U. S. Geological
	        
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