Quartz Fibre Dosimeter Chargers
The 1958-9 'Quartz Fibre Dosimeter Chargers, No. 1 and 2' were retained until the early 1990s as they do not require batteries at all (they incorporate a simple handle-driven generator). A later British civil defence dosimeter charger was developed by R. A. Stephen Ltd and manufactured from 1967–88, and uses a single 1.5 volt cell. It is similar to American dosimeter chargers.
Read more about this topic: Civil Defense Geiger Counters, British Civil Defence Instruments
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