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Solinst 105 Well Casing & Depth Indicator

The Well Casing & Depth Indicator is useful when determining where metal casing starts and ends in new or existing well constructions, hydrofracturing, and installing packers or other downhole instruments. The 105 Well Casing & Depth Indicator uses a dual-function stainless steel probe connected to clearly marked flat tape, fitted on a well-balanced reel.

The Solinst Model 105 Well Casing & Depth Indicator detects metal well casing and measures total well depth using one probe. The Well Casing and Depth Indicator is ideal for determining where metal casing ends and starts in new or existing constructions, useful when installing downhole instrumentation, and simple to use when measuring well depths. A strong magnetic assembly in the probe detects well casing, while a plunger assembly at the bottom of the probe signals well depth.

Made durable for the field, the new 105 Well Casing & Depth Indicator is a must-have tool for every driller and hydrogeologist!


  • Magnetic assembly for detecting metal well casing
  • Ground detector for measuring total well depth
  • Probe is submersible to 500 m (1650 ft)
  • Measurements read from durable laser marked flat tape
  • Standard tape lengths to 600 m (2000 ft)
  • Replacement tapes interchangeable with other Meters
  • Robust field instrument with 3 year warranty

The probe has a strong internal magnetic assembly to detect well casing. When the probe is adjacent to magnetic metal (e.g. steel) a circuit is completed activating the buzzer and light (quick intermittent beeps and flashing red light). When the probe is no longer next to the casing, the signals stop. Depths are read from the tape at surface.

A plunger at the bottom of the probe is used to measure total well depth. The light and buzzer activate when the plunger reaches the bottom of a well and is pushed into the probe body completing a magnetic circuit (slow intermittent beeps and flashing red light). The depth is read from the tape.

The convenient battery test button checks the main circuitry to determine when the battery needs replacing. For easy-access, the battery is housed in a drawer in the front of the faceplate.


Ordering Information 

114440 105 Well Casing & Depth Indicator 30m

114441 105 Well Casing & Depth Indicator 60m

114442 105 Well Casing & Depth Indicator 100m

114443 105 Well Casing & Depth Indicator 150m

114445 105 Well Casing & Depth Indicator 250m

114446 105 Well Casing & Depth Indicator 300m

114447 105 Well Casing & Depth Indicator 400m

114448 105 Well Casing & Depth Indicator 500m