Cole-Parmer Pocket Flowmeter for Oxygen, 2 to 15 LPM; Fits 3/16 to 7/16" ID Tubing

Pocket Flowmeters are portable handheld flowmeters designed to measure flow rates quickly and easliy. Measure oxygen or air in laboratory research applications, in the lab, field, or in process areas. Simply attach the flowmeter to tubing vertically to ensure accurate readings. Read center of ball float for the most accurate reading. Perfect for quick flow readings of tubing Reads 3/16 to 7/16'''' I.D. tubing size Polycarbonate flow tube Stainless steel float