Fieldpiece ASP2 Pressure Static Probes Description Use your ASP2 Static Pressure Probes to measure duct static pressure the right way. Slide your ASP2 into the rubber hose of Fieldpiece models AMN2, ADMN2, SDMN5, or any manometer with appropriate sized ports, to greatly improve accuracy over using the hose alone. Designed for HVAC/R techs, the magnetic flange and painted arrow ensure proper orientation and allow hands free us