Deep-well water level measurement from 1500 to 3000 ft (450–925 m), on a crank-assisted manual rewind reel. Past about 1000 ft, retrieving a wet tape hand-over-hand becomes slow and hard on the tape — a geared rewind handle does the work, keeps the wind even, and gets the tape back on the reel without kinks.

Same measurement performance as our standard reels: accurate to roughly 1/100 of a foot per 100 feet, with a field-serviceable 5/8" (1.59 cm) probe on polyethylene-coated steel tape, marked in engineering scale or metric. PFAS-free construction.

Choose your configuration

1. Tape material — Poly or MDPE, both polyethylene-coated steel. MDPE runs slightly less per length. ETFE available on request.
2. Length and markings — 1500–3000 ft marked in feet, or 450–925 m marked in metres. Tape is marked in one system only, so order the units your logs use.

These reels are supplied with the 5/8" probe only — the 3/8" probe is not offered at these depths. There is no carrying bag option for this reel size.

Which rewind do I need?

• Manual rewind (this reel) — geared hand crank. Lower cost, nothing to charge, nothing to fail electrically. Good for occasional deep readings.
• Electric rewind — powered retrieval, and the only option past 3000 ft (to 5000 ft). Worth it if you're running deep wells all day or your crew is doing many wells per shift.
• ET / ETL standard reel — 100–1000 ft / 30–300 m, and where the 3/8" probe option lives.

Features

• Lightweight steel and aluminum reel frame built for deep tape loads
• Field-serviceable 5/8" probe with stainless steel conductors
• Adjustable sensitivity to prevent false triggering
• Audible and visual alert on water contact
• Easily replaced 9-volt battery
• Leader Guard included for longer tape life

Parts & accessories

Everything for this reel is in Geotech WLM Parts & Accessories — including:

• Replacement tape for 1500–5000 ft / 450–925 m reels
• Reel assembly — manual and electric rewind versions
• Probe assembly and tape weight, guide, and guard
• Crank handle, camlock brake, O-rings, and knobs

Documentation

• ET / ETL Water Level Meters — specifications (PDF)
• Water Level Meter — user manual (PDF)

Need a depth or configuration not listed? Contact us — we build these in Denver and can quote custom lengths.