This is a remodelled version of the area flowmeter designed to measureslurry liquids with a tapered metal tube indicator. A ribbed glass tube working as an indicator measures opaque liquids such as sewage and muddy water. The glass tube prevents adherence of sediment for easy reading. Please specify the diameter from the range of 1/2B - 8B. Please specify the body material from SS41, SUS304, SUS316, P.V.C. Please specify the main parts materials from SUS304, SUS316, SUS316L or P.V.C. Please specify the lining of parts in contact with liquid from the following: Rubber, Epoxy resin or P.V.C.