The HL10 hand-held acoustic water leak location device from Vivax-Metrotech Corp. is compact and easy to use, with acoustic and visible values for a leak survey and leak pinpointing while reducing leak location time. With three filter settings, it can be finely adjusted to the individual task and suppress interfering background noise. The visual LED indicator assists the leak location procedure with simple, one-handed operation. An LED light is built in for use in low-light areas. Greater versatility is gained by combining it with the sensitive GM 80 wind protected ground microphone. 800/446-3392; www.vivax-metrotech.com.