The ISM 5.0 insertion magmeter from Greyline Instruments measures flow of conductive liquids in pressurized pipes ranging from 3 to 72 inches in diameter. The magmeter installs through a tap in the pipe wall. Installation through a full port ball valve allows easy retraction and reinsertion. A dual-electrode sensor and continuous auto-zero function ensures high accuracy even at low flow rates. 888/473-9546; www.greyline.com.