Geotech Interface Probe With Float The Geotech Interface Probe With Float is a portable, reel-mounted instrument that provides measurements of liquids lighter and heavier than water. When the probe is lowered down a well and contacts the product layer, a solid tone and red light alarm is activated at the reel. When the probe detects water, the tone begins to oscillate and the light changes to green. FEATURES • Extremely durable polypropylene storage reel with rugged aluminum frame • Highly accurate Kynar® coated steel tape marked in engineering or metric increments • Stainless steel conductors for durability • PTFE and stainless steel probe with spring strain relief • Audible and visible alarms activated on reel when probe contacts product and water • Auto shut-off circuit to extend battery life • Easily replaced 9 volt battery • Water resistant padded carrying case to protect instrument • Built in reel hanger and included tape guide for longer tape life. SPECIFICATIONS Size: Reel - 13" H x 11" W x 7" D (33 cm H x 30 cm W x 18 cm D) Probe - 1.5" O.D. x 8.9" L (3.8 cm O.D. x 22 cm L) Length & Weight: 100' (30 m) = 9 lbs. (4 kg) 200' (60 m) = 11 lbs. (5 kg) 300' (100 m) = 14 lbs. (6 kg) Accuracy: Tape - 100th of a foot/100' (3mm/30m) Per Federal Specification GGG-T-106E Material: Reel - Polypropylene and aluminum Tape - Kynar coated steel Probe - PTFE, Viton and Stainless Steel Power: 9 Volt DC alkaline battery Alarm: Audible and visual Warranty: 1 year