The Vacmasters System 1000 is designed as an economical tool for smaller contractors and public-works managers who prefer air-powered potholing for 95 percent of their jobs, yet want the capability for water-excavating tough soils. The System 1000 can be trailer-, truck- or skid-mounted and features a 68-hp diesel engine, hydraulic dumping of its 200-gallon spoils tank and remote operation. Estimated price: $46,000 and $50,000.