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Improved calibartion circuits allow for +/- 20% calibrations
We have installed these in Ludlum Meters
The units were in cal through 2016
) diameter filter or planchet
Automatic or manual selection of transmission correction factors
Victoreen 90-12 Energy Compensated GM "Hotdog" style probe Bicron Improved calibartion circuits allow forThe 90 12 is a rugged, lightweight, energy compensated, general purpose Geiger Mueller (GM) tube based hand held probe, with beta shields. These probes are designed to fulfill a variety of radiation measurement needs. The adjustable beta shield is a 360 degree shield with a linear movement to permit discrimination between penetrating and non penetrating radiation. The two windows expose an angle of 180 degrees total in the most sensitive area of the