The 105 Well Casing and Depth Indicator is used to detect metal well casing and measure total well depth. It offers both of these functions using one probe.
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. When the probe is no longer next to the casing, the signals stop.
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.
Well casing and well depths are read from durable Solinst laser marked flat tape; lengths to 600 m (2000 ft).
