Fisher M-66

Fisher's M-66 Valve and Box Locators are designed specially for finding buried or paved over valves, boxes, vaults, etc. The M-66 detects all metals including aluminum, brass, copper, iron, nickel, steel or tin. Key Features Simple operation - only 2 knobs Ultra-sensitivity and maximum penetration through soil, asphalt, or concrete Ground rejection VLF (very low frequency) eliminates flase signals Detects all metals Built-in battery test Analog meter and audio target signal  Adjustable shaft Fully submersible 8 inch search coil Weather resistant design Download Brochure.