- Jackson, Michigan, United States
- Jun 24th
~Dwyer Magnehelic 2050 Pressure Gage~ **BRAND NEW** Large, easy-to-read 4" (102 mm) dial No manometer fluid to evaporate, freeze, or cause toxic or leveling problems The Magnahelic guage is the industry standard to measure fan and blower pressures, filter resistance, air velocity, furnace draft, pressure drop across orifice plates, liquid levels