Water Level Indicator is designed to measure groundwater levels, especially in small diameter tubes and piezometers, or where a flexible assembly is needed to get past down hole instrumentation. Choice of two small diameter probe designs, attached to a narrow coaxial cable, fitted on a sturdy ergonomically designed reel. Laser etched every 1/100 ft. or each millimetre. Lengths of 100-1000 ft. (30m-300m). Braided copper outer conductor for flexibility and steel central conductor gives strength.