We are offering glass tube rotameter. mainly used for measuring rated flow of liquid and gases. available in c.s, ss-304, ss-316 poly propelene.p.t.f.e. Lined. flanged, screwed or hose connections. available from 15 nb to 100 nb pipe size and ranges between 30 to 20,000 lph of water at ambient temperature. linear scale having accuracy of 2% fsd. high & low flow switches.