7173 
Pi ‘ . 
A. Sequence beam brightener, synchronising J. Battery operated L-C oscillator 
control cams, and tachometer K. Modified Dumont 208 eathode-ray oso1llograph 
B. Capacity bridge Le Flexible drive shaft to roteating-drum camera 
C. Master control M. Rotating-drum camera 
D. Crater (timing) tube power N. Flexible drive shaft to control eams and 
EB. Multivibrator frequency (timing) source tachometer 
Fe Voltage stepper O. Main drive shaft and gear housing 
G. Sweep generator P. Air duct for forced ventilation of 
H. Sweep generator osoillographs 
I. Time delay R. Camera tube 
8. Crater-tubs connection 
Fig. 12. Cathode-ray osoillographs and associated equipment for rotating-drum camera recording. 
