Aalborg Instruments has introduced direct-reading scales for Models P, S and T flowmeters. Direct-reading flow-tube scales are designed for a specific gas or liquid at a given temperature and pressure, valid only for the associated units of flow. Flow rates for a specified set of parameters are clearly indicated in specific engineering units, such as ml/min or scfh. Using correlating tables and graphs to determine flow rates is no longer necessary. NIST-traceably calibrated for specific liquids and gases, these units are designed for OEM applications and processing industries. Direct-reading scales are available for argon, carbon dioxide, helium, hydrogen, hydrogen chloride, methane, nitrous oxide, oxygen and propane.