Industrial Scientific 17124983 6 Gas Detector Sensor GasBadge Pro, Ammonia, Sensor 28XR54 Drum Head Type Closed Head Drum Head Type Closed Head Recommended Plumb Bob: 590n Handle Type Folding Item Double Duty Oil Gauging Tape Measure Measurement Type SAE Case Color Red Chrome Blade Color Silver Blade Coating Nickel and Chrome Electroplating Case Material Steel and Plastic with Grounding Strap Case Type Open Blade Material Steel Stud Markings No Series Atlas® Chrome Clad® Nubian® Standards NIST Certified Includes Grounding Strap Numeric Format Fractional Handle Color Black Handle Material Plastic Blade Type Single Sided Numeric Marks Feet For Use With GasBadge Pro Single Gas Air Monitors Gas Detected Ammonia Chemical Formula NH3 Sensor Range 0 to 500 ppm Operating Temp Gas Detected Ammonia