Waterline Envirotech Ltd. is a woman-owned and operated small business that has served the public, private and governmental sectors of the water well industry for over 40 years. Our instruments are manufactured using either a strong, flexible ⅜-inch-wide tape with stainless steel conductors or a coaxial cable, and are housed on a durable, plastic, free-standing, braked reel. We are pleased to manufacture our products here in the USA. Visit our website for information and pricing. waterlineusa.com