407495-NIST / Extech Heavy Duty Digital Differential Pressure Manometer Extech 407495-NIST - NIST Calibration Certificate - Heavy Duty Pressure Meter features: Meter stores range and calibration data for six pressure ...
Testo-510-Set / Testo เครื่องวัดความดันลม Differential Pressure Meter Testo 510-Set Portable pressure and flow meter Combined with Pitot tube to measure air flow rate With 10 measurement units to choose from