Used with series 1000 in-line transducers, measures mass low (scfm) in a given pipe diameter from 1/4 to 6 in., meter dial has 2 printed scales: a and b, also a third range sensitivity ax0, 1, ranges in scfm: 0-5, 0-15 and 0-50, temperature and pressure compensated; 0-10v linear output voltage
