Ludlum model 78 Stretch ScopePhoto shows actual unit for sale. Analog + Digital Meter Extends to 3. 6 m (12 ft.) 2 Energy Compensated GM Detectors Range: 0. 1 mR hr to 1000 R hr (shoulder strap included) The Model 78 Stretch Scope telescoping gamma survey meter keeps the user at a safe distance from high radiation areas and reaches areas that are difficult to access with other detectors. The wide 0. 1 mR hr to 1000 R hr detection range is accomplished using dual energy

cadmium loaded polyethylene sphere with a BF3 tube in the center

4-Range Analog Ratemeter

alarm setpoints

*Efficiencies listed as percentage of 4π emission rate

Air quality monitoring in nuclear power

Can be used with underwater housing or extensions

may be certified -40 to 65 °C (-40 to 150 °F)

27% for 99Tc

The UD-7900 utilizes most of the mechanics and much of the electronics of the UD-710

the Model 190 detects alpha

It is shown in photos

05% of full scale (typical) Response speed: 150 ms from 10% to 90% of full scale (typical) Operating temperature range: -30° to 100°C Industry Approved by Factory Mutual approvals: Research Corporation as intrinsically safe for use in Class I