Well Casing & Depth Indicator

solinst well casing and depth indicator

The Model 105 Well Casing & Depth Indicator uses one probe to allow both the detection of metal well casing and measurement of total well depth.

The 105 Well Casing and Depth Indicator Probe is made from 316 stainless steel and is submersible up to 500 m (1650 ft.). It contains a strong magnetic assembly to detect metal (e.g. steel) well casing. When the probe is adjacent to magnetic casing a circuit is completed activating the buzzer and light. When the probe is no longer next to the casing, the intermittent signals stop. Well casing detection produces a faster signal compared to the slower signal for total well depth.

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.

Well casing and well depth measurements are read from durable Solinst laser-marked flat tape. Lengths are available up to 600 m (2000 ft.), accurately marked each millimeter or every 1/100 ft.

solinst well casing and depth indicator probe


Well Casing & Depth Indicator Applications

  • Measuring total well depth
  • Groundwater well installation
  • Detecting cracks in well casing
  • Installing telescoping well screen
  • Packer and downhole instrument installation
  • Hydrofracturing
  • Confirming existing well construction
  • Decommissioning abandoned wells
Standard Length Options:
Small Reel 30 m 100 ft.
  60 m 200 ft.
  100 m 300 ft.
Medium Reel 150 m 500 ft.
  250 m 750 ft.
  300 m 1000 ft.
Large Reel 400 m 1250 ft.
X-Large Reel 500 m 1650 ft.
  600 m 2000 ft.


solinst laser marked flat tape for well casing and depth indicator

LM2: Feet and tenths: with markings every 1/100 ft.
LM3: Meters and centimeters: with markings every mm