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Type
Model No.
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Date
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Disk
PTT Dosage Calculator
PTT
Nederlands
Plastic
p. 1982
Dia. = 14 cm
Radiation Dosage
Notes:
1) Used to calculation the radiation dosage to determine when safe to leave PTT telecommunication facilities after an atomic explosion 2) Designed by Dr. C.G.F. Ampt and ing. K.K. Keimpema 3) Designed for Dutch conditions rather than NATO
Image 1
Image 2
