The AML Pro and AML+ all-material locators from SubSurface Instruments use ultrahigh radio frequencies to locate buried plastic, metal, wood, cable and pipe in any soils at depths of more than 20 feet. Locators feature digital microprocessor technology, a lithium rechargeable battery pack and GPS reporting, eliminating the need for auxiliary tracking equipment on the job site. 855/422-6346; www.ssilocators.com.