EZ-View flow meters are available in sizes from 1/2-2 in., can be installed in any position, and work with liquid, air, and compressed gases. Flow ranges are 2-100 gal./min. for liquids and 35-1,000 SCFM for gases. The meters work at fluid temperatures of 32-250[0] F and pressures to 325 psi. Accuracy is 5% of the full scale reading, with 1% repeatability.Hedland Flow Meters: 800/433-5263; www.hedland.com