The Solinst Model 102 Water Level Indicator delivers precise, reliable groundwater level measurements in narrow wells, piezometers, monitoring tubes, and confined borehole spaces where traditional meters can’t fit. 

Equipped with a high-sensitivity probe and clear audible and visual indicators, the 102M provides precise depth readings. The durable coaxial cable ensures reliable performance in demanding field environments.

There is a choice of the P4 or P10 Probe. 

• P4 Probe – 4 mm (0.157″) diameter stainless steel, ultra-slim and lightweight for the narrowest openings such as multilevel system channels and fine piezometers.

• P10 Probe – 10 mm (3/8″) diameter stainless steel with 10 segmented weights, ideal for most groundwater monitoring applications where increased depth and flexibility are needed.

If you need tape marked in metric, please give us a call!

Key Features:

• Laser-marked coaxial cable with permanent millimeter or 1/100 ft markings for high-precision measurement.
• Durable polyurethane jacket with copper braided outer conductor and stainless steel core — flexible, abrasion-resistant, and easy to splice.
• Narrow diameter probe options (P4 and P10) for tight boreholes and down-well obstructions.
• Clear visual LED and audible buzzer signals when the probe contacts water.
• Adjustable sensitivity control reduces false signals from cascading water or variable conductivity.
• Recessed probe tips help minimize false triggers in turbulent or flowing water.
• Sturdy ergonomic reel designs with brake and battery access for ease of use in the field.

Applications:

• Groundwater level assessment in narrow boreholes, wells, and nested piezometers.
• Environmental site assessments (Phase I/Phase II ESA) and compliance monitoring.
• Hydrogeological investigations and long-term monitoring programs.
• Accessing narrow diameters where standard probes cannot fit, such as multilevel system channels and tight tubing.
• Research, consulting, and groundwater resource projects requiring accurate point measurements.