Geotech Interface Probe With Float

Oil and Water Level Meter

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.

  • Extremely durable polypropylene storage reel with rugged aluminum frame
  • HDPE coated steel-core dog bone shaped tape
  • Highly visable printed markings in engineering or metric units
  • 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 Leader Guard for longer tape life.


  13" H x 11" W x 7" D (33 cm H x 30 cm W x 18 cm D)
1.5" O.D. x 8.9" L (3.8 cm O.D. x 22 cm L)


  100 foot (30 meters) = 9 lbs. (4 kg)
200 foot (60 meters) = 11 lbs. (5 kg)
300 foot (100 meters) = 14 lbs. (6 kg)


  1/100 of a foot per 100 feet (3mm/30.5 meters)
Per Federal Specification GGG-T-106E

  Polypropylene and aluminum
HDPE coated steel-core tape
PTFE, Viton® and stainless steel

Resolution:   Imperial units 1/100 per foot, metric units 1mm

Power:   9 Volt DC alkaline battery

Alarm:   Audible and Visual

Warranty:   1 year

Adobe® Reader® is required

> Specifications PDF

> Installation and Operation Manual







Geotech Interface Probe With Float
Geotech Interface Probe With Float includes padded
carrying case and Leader Guard