valve dosimeter

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Civil Defense geiger counters — Most Civil Defense Geiger Counters and ion chamber survey meters were issued by the governmental Civil Defense organizations in several countries from the 1950s in the midst of the Cold War in an effort to help prepare citizens for a nuclear… … Wikipedia
Professional diving — Hardhat diving redirects here. Often, hardhat diving is used to specifically mean diving in the old type Standard diving dress. A US Navy diver at work. The umbilical supplying air from the surface is clearly visible Professional diving is a type … Wikipedia
Electrometer — An electrometer is an electrical instrument for measuring electric charge or electrical potential difference. There are many different types, ranging from historical hand made mechanical instruments to high precision electronic devices. Modern… … Wikipedia
Apollo 8 — Infobox Space mission mission name = Apollo 8 insignia = Apollo 8 patch.png command module = CM 103 mass 28,817 kg service module = SM 103 lunar module = Lunar Test Article (LTA B) mass 9,026 kg booster = Saturn V SA 503 crew size = 3 launch pad … Wikipedia
Fukushima 50 — Satellite image of the Fukushima I Nuclear Power Plant where the Fukushima 50 were assigned to stabilize the six reactors at the plant Fukushima 50 is the alias given by the media to a group of employees at the crippled Fukushima I Nuclear Power… … Wikipedia

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