Rule Mate Automatic Bilge Pump Rule has been building bilge pumps for over 30 years. These pumps are preferred by recreational boaters, yachtsmen, and by commercial fishermen everywhere. An all-in-one pump and switch, Rule Mate automatic bilge pumps are eco-friendly and feature a solid state water-sensing technology eliminating the need for a separate float switch. Instead, when the water level rises, the pump turns on. When all water is removed, the pump will shut itself off. In addition, Rule