Ludlum Measurements 5 is a self-contained portable Geiger Counter with two internal Geiger-Mueller (GM) tubes and five linear ranges used in combination with exposure rate or CPM meter dials. It features a regulated high-voltage power supply, overload circuitry, unimorph speaker with audio ON-OFF capability, fast-slow meter response, meter reset button, battery check button and a six-position switch for selecting range multiples of ×0.1, ×1, ×10, ×100 and ×1000. The unit body and meter housing are made of cast aluminum and the can is 0.23 cm (0.090 in.) thick aluminum.
Ludlum Measurements 5 is a self-contained portable Geiger Counter with two internal Geiger-Mueller (GM) tubes and five linear ranges used in combination with exposure rate or CPM meter dials. It features a regulated high-voltage power supply, overload circuitry, unimorph speaker with audio ON-OFF capability, fast-slow meter response, meter reset button, battery check button and a six-position switch for selecting range multiples of ×0.1, ×1, ×10, ×100 and ×1000. The unit body and meter housing are made of cast aluminum and the can is 0.23 cm (0.090 in.) thick aluminum.
Ludlum Measurements 5 is a self-contained portable Geiger Counter with two internal Geiger-Mueller (GM) tubes and five linear ranges used in combination with exposure rate or CPM meter dials. It features a regulated high-voltage power supply, overload circuitry, unimorph speaker with audio ON-OFF capability, fast-slow meter response, meter reset button, battery check button and a six-position switch for selecting range multiples of ×0.1, ×1, ×10, ×100 and ×1000. The unit body and meter housing are made of cast aluminum and the can is 0.23 cm (0.090 in.) thick aluminum.
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