Dwyer 475-1-FM Mark III Handheld Digital Manometer, FM, 0-20" w.c. 10 PSI 1985 Second generation patented BDSS high

Second generation patented BDSS high definition drivers for life like tonal balance

Fully articulating torsion head for controlled coupling and stable towing

The Hougen line of magnetic drills is economical and versatile and there is a magnetic drill available for every need

New 31-band graphic equalizer processing on the stereo bus

Dwyer 475-1-FM Mark III Handheld Digital Manometer, FM, 0-20" w.c. 10 PSI 1985 Second generation patented BDSS highFeatures Rugged aluminum case protects instrument from damage during transport use Large, easy to read LCD and simple operation FM approved to be intrinsically safe in hazardous locations, Class 1, Div 2, Groups A, B, C, D, T4 Ta = 70C Applications Monitoring natural gas pressures on boilers and other combustion equipment Field calibration of other instruments Monitoring or troubleshooting HVAC R systems Air velocity monitoring, when used with a Dwyer