{"product_id":"fisher-labs-m66-metal-detector","title":"Fisher M66 Valve and Box Locator","description":"\u003ch1 id=\"itemTitle\" class=\"it-ttl\" itemprop=\"name\"\u003eWith 8\" Coil  - Fully Submersible\u003c\/h1\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ch3\u003e\u003cstrong\u003eBest Price Guaranteed - Price Match\u003c\/strong\u003e\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003ch3\u003e\u003cstrong\u003eFree US Shipping\u003c\/strong\u003e\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003ch3\u003e\u003cstrong\u003eManufacturer's Limited Warranty\u003c\/strong\u003e\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003cli style=\"font-weight: bold;\"\u003e\n\u003ch3\u003e\u003cstrong\u003eMade in the USA 🇺🇸\u003c\/strong\u003e\u003c\/h3\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003ePurpose:\u003c\/strong\u003e Valve \u0026amp; Box Locator\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe Fisher M-66 is an all-metal, professional-grade metal detector designed specifically for utility workers, municipal crews, and contractors. Engineered for simplicity and effectiveness, it excels at locating valve boxes, manhole covers, and other buried metallic infrastructure—even through asphalt and concrete. A standout feature is its double-D search loop, offering stable performance and deeper detection.\u003c\/p\u003e\n\u003cp\u003eOperating at 4.5 kHz, the M-66 provides consistent and accurate detection of ferrous and non-ferrous metals. Its analog meter and audio tone alert users to changes in signal strength, ensuring quick identification of buried targets. The detector uses manual tuning and ground balancing to adapt to varying soil mineralization, while the threshold-based Tuning Control allows users to optimize sensitivity. The search loop is immersible, supporting work in wet environments.\u003c\/p\u003e\n\u003cp\u003eBuilt for demanding field conditions, the M-66 features a rugged frame with an adjustable shaft (28\"–48\") and an 8\" waterproof coil. Weighing just 4.25 lbs, it offers comfortable handling over long shifts. Powered by dual 9V batteries, it delivers extended operation and includes a battery test function to prevent downtime. The control layout is intuitive, making it easy to train new users and ensure reliable performance in daily operations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSpecifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e First Texas Products, LLC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand Name: \u003c\/strong\u003eFisher Research Labs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCountry of Origin:\u003c\/strong\u003e USA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWarranty: \u003c\/strong\u003e2 Years\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput Frequency:\u003c\/strong\u003e 4.5 kHz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudio Output:\u003c\/strong\u003e 450 Hz via 16-ohm speaker\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Supply:\u003c\/strong\u003e 2 x 9V batteries\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Consumption:\u003c\/strong\u003e (-9V) 17 mA; (+9V) 4 mA min, 6 mA sound threshold, 125 mA max sound\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight (with 8” coil):\u003c\/strong\u003e 4.25 lbs (1.93 kg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating Temperature:\u003c\/strong\u003e -4°F to 158°F (-20°C to 70°C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSearch Coil:\u003c\/strong\u003e 8\" fully submersible\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Shaft Length:\u003c\/strong\u003e 28\" to 48\" (71 cm to 122 cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Weight:\u003c\/strong\u003e 7 lbs (3.18 kg)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eShipping Dimensions: \u003c\/strong\u003e34.75\" x 12.75\" x 5.25\" (88.3 cm x 32.4 cm x 13.3 cm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTarget Indication:\u003c\/strong\u003e Analog meter and audio tone\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTuning \u0026amp; Ground Control:\u003c\/strong\u003e Manual threshold and ground rejection controls\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal Detection Type: \u003c\/strong\u003eDetects all metals including aluminum, brass, copper, iron, nickel, steel, and tin\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDesign Features:\u003c\/strong\u003e Weather resistant, built-in battery test, simple 2-knob operation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Fisher Labs","offers":[{"title":"Default Title","offer_id":31935023513693,"sku":"M66","price":595.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1470\/8540\/products\/Fisher-Labs-M66-Metal-Detector-8-Coil-w-Sensitivity-and-Ground-Compensation.jpg?v=1765472799","url":"https:\/\/destinationgolddetectors.com\/en-br\/products\/fisher-labs-m66-metal-detector","provider":"Destination Gold Detectors LLC","version":"1.0","type":"link"}