Check the listing for details. Solinst Model 122M Mini Interface Meter 25m. Condition: New. Listed at 893.00 USD. Ebay_Standard DIV FORESTRY SUPPLIERS Product Head--> Solinst Model 122M Mini Interface Meter 25m Description Graduated in meters and centimeters with markings every mm. Small enough to fit in a backpack, this oil/water interface meter provides accurate measurements of product level and thickness in wells and tanks. When the meter's 5/8˝ diameter stainless steel probe enters liquid, an infrared beam is refracted away from the detector, and an audible tone and light are activated. Product (non-conductive liquid) is indicated with a steady light and tone, and water (conductive liquid) is indicated by an intermittent light and tone. Both optical and electronic sensors use the same zero point, providing an accuracy of 1/200 ft. (or 1.0mm). The meter's 0.12˝ (3mm) coaxial cable features a PVDF jacket with permanent laser markings, a braided copper outer conductor, a stranded stainless steel central conductor, and a chemical-resistant surface that is easy to decontaminate. The meter also features stable electronics with automatic circuitry testing. One 9V battery provides 300 hours of operation. About Us When Jim Craig began his mail order forestry business in 1949, packages wrapped for Parcel Post shipment to customers were loaded onto a Red Wagon and pulled to a nearby post office. Today, Forestry Suppliers is a direct-mail supplier for natural resource professionals worldwide. Our catalogs feature thousands of quality products for the forestry, environmental science, surveying/engineering, wildlife biology, horticulture, grounds maintenance, and education professionals - and more. Our legendary "Red Wagon" service continues to this day, with product and technical support before and after the sale, a bilingual sales staff, experienced customer service representatives, a knowledgeable bid and contract department, and an in- house repair service. Shipping We ship everything within 1 business day of payment via UPS Ground or USPS Priority Mail. All orders ship from Jackson, Mississippi. Payment For customers shopping in our eBay Store, we accept eBay Managed Payments. Powered by eBay Turbo Lister The free listing tool. List your items fast and easy and manage your active items.