This “Geiger Counter” instrument offers a wide dynamic range, 0–20 mSv/hr (0–2000 mR/hr), by employing two energy compensated GM tubes. The external Model 44-38 detector, connected via a 99 cm (39 in.) cable, accommodates the first four selection ranges (x0.1, x1, x10, x100). The top most range (x1000) is read from the detector located inside the instrument enclosure.
The Model 78 Stretch Scope telescoping gamma survey meter keeps the user at a safe distance from high rad areas, and reaches areas otherwise difficult to normally access. The wide 0.1 mR/hr to 1000 R/hr detection range is accomplished using dual energy-compensated GM detectors.
The Model 25 is a conveniently small-sized device designed to warn users any time they are in a potentially harmful radiation environment. The unit will automatically alarm with a loud audible signal and blinking display when either the dose rate (0.01 mR/hr-1,000 R/hr) or accumulated dose (0-1999 R) setpoints are exceeded. The dose is recorded until manually reset and is for use as reference only; it is not intended for legal dose recording.