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Leica Midi Sonde 8/33kHz 850289 - Dual Frequency Sonde for Non-Metallic Pipe Location
Grade
Handles Professional-grade so crews can match design slopes.
Authorized Leica Geosystems Dealer
Genuine, factory-fresh Leica Geosystems equipment with legitimate firmware and calibration documentation.
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In-stock orders placed before 2 PM CT ship the same day.
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Compatibility and setup details on every product, plus our AI assistant for quick questions.
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Genuine equipment sourced straight from manufacturer partners.
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Factory-fresh, authentic units with legitimate firmware.
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Kit Builder
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Answer a few job questions and our Kit Builder assembles the full setup — receiver, rod, tripod, and case matched to your workflow.
Quick Answer
What is the Leica Geosystems 833KHZ?
The Leica Midi Sonde 8/33kHz 850289 - Dual Frequency Sonde for Non-Metallic Pipe Location is a Leica Geosystems professional jobsite instrument. It's available from Express Tools as an authorized Leica Geosystems dealer with same-day shipping on in-stock orders.
What contractors use this accessories for
Construction Layout
Precise positioning for structural and civil work
As-Built Documentation
Field-verified position records for project closeout
Grade Verification
Confirm elevations against design before pouring or paving
Product Description
Key Features
Dual Frequency: 8kHz & 33kHz
Select 8kHz for better signal penetration in deeper or high-conductivity soil, or 33kHz for standard utility depth work. Two modes in one compact sonde.
38mm (1.5") Diameter
Sized for standard drain and sewer access. Fits inside residential and commercial drain systems, inspection camera housings, and boring tools.
M10 Thread Adapter
M10 male thread plus female adapter — attaches directly to drain rods, boring tools, and inspection camera heads for push-in deployment.
AA Battery Powered
Runs on a single AA alkaline battery (included). Self-contained — no transmitter or tether cable required. Simple, reliable, ready to go.
Up to 5m Working Depth
Locatable up to 5m (16.5ft) deep. With the DD130 locator, depth estimation is accurate from 0.1m to 9.99m for precise excavation planning.
Drain, Sewer & CCTV Compatible
Works alongside CCTV inspection cameras — locate the camera position from the surface as it travels through the pipe system.
How It Works
The Midi Sonde is a self-contained electronic transmitter inside a ruggedized housing. Here's the workflow:
- Install the battery (1× AA alkaline) and select the frequency (8kHz or 33kHz) for your conditions.
- Attach the sonde to drain rods, a boring tool, or an inspection camera using the M10 thread adapter.
- Feed the sonde into the drain, sewer, or duct through the nearest access point (manhole, cleanout, etc.).
- Locate from the surface — walk above the pipe route with a DD120 or DD130 locator. The locator picks up the sonde's signal and guides you to its position.
- Measure depth — with the DD130 locator, get accurate depth readings (±0.1m) to plan excavation safely.
- Mark the route and location of any blockages or junctions found during the survey.
Related Items

Leica Detect DD120 Utility Locator Base Model (60Hz) 872939
Entry-level electromagnetic utility locator for detecting buried cables and pipes.
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Leica Trace Rod 50
50cm flexible rod for locating non-metallic pipes when used with a signal transmitter.
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Leica Detect DD120 (60Hz) Plumbers Package
DD120 locator with Midi Sonde — for locating PVC pipes and non-metallic drains.
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Leica Property Plug Connector 850284
US cable set for applying a traceable signal to live electricity power cables.
View Product →Technical Specifications
| Article Number | 850289 |
| Diameter | 38 mm (1.5") |
| Frequencies | 8 kHz and 33 kHz (dual, selectable) |
| Thread | M10 male + female adapter |
| Battery | 1 × AA alkaline (included) |
| Max Working Depth | 5 m (16.5 ft) |
| Depth Estimation Range (with DD130) | 0.1 m to 9.99 m |
| Compatible Locators | DD120 (detect only), DD130 (detect + depth), DD300 Connect |
| Compatible Tools | Drain rods, boring tools, CCTV cameras (M10) |
Related Items
Entry-level electromagnetic utility locator for detecting buried cables and pipes.
View Product →
Manuals & Downloads
Why This Equipment
Authorized Dealer
Genuine, factory-fresh inventory with legitimate firmware and calibration documentation.
Same-Day Shipping
In-stock orders placed before 2PM ship same day from our Texas warehouse.
Expert Support
Call or chat with a contractor equipment specialist before and after your purchase.
Free Shipping
Free ground shipping on orders $99+ to the continental US.
Professional-grade equipment, authorized dealer pricing.
The tools contractors trust on municipal infrastructure, commercial projects, and high-tolerance earthwork aren't available at hardware stores — and they shouldn't be. This equipment is engineered for professionals, and buying it through an authorized dealer means you get full manufacturer support when it matters.
Express Tools carries only factory-fresh inventory from brands contractors specify by name. No gray-market product, no import-spec units, just authentic gear with legitimate firmware and calibration documentation.
Same-day shipping on in-stock items, expert support before and after the sale, and a 30-day return window on most products. If you have questions about specs, compatibility, or applications, call us — we know this equipment.
Specifications
Technical Specs
Manufacturer data and field-verified measurements.
| Type | Colombian machete |
|---|---|
| Product Type | Colombian Machete |
| Package | Machete with sheath |
| Includes | Protective sheath |
| Material | High-carbon steel blade |
| Grade | Professional-grade |
| Sheath Type | Protective carrying sheath |
| Design Origin | Colombian |
| Key Feature 1 | Professional-grade Colombian machete design |
| Key Feature 2 | High-carbon steel blade for reliable cutting |
| Key Feature 3 | Protective sheath for safe transport |
| Key Feature 4 | Injury risk reduction with secure carry solution |
| Key Feature 5 | Blade protection extends tool life |
| Key Feature 6 | Prevents dulling from contact damage |
| Use Cases | Sight line clearing for surveyors; Vegetation management on job sites; Brush clearing operations; Survey point access establishment; Landscape maintenance; Dense vegetation cutting |
| Setup Steps | Unsheath machete before use | Inspect blade for sharpness and condition | Secure sheath on belt or pack when carrying | Return blade to sheath immediately after use |
| Pro Tips | Always return blade to sheath between cuts | Wipe blade dry after wet conditions | Sharpen blade regularly for efficient cutting | Secure sheath firmly to prevent tool loss | Wear heavy gloves when handling |
| Compatible Equipment | Tool belts; Work harnesses; Heavy-duty backpacks |
| Common Issues | Blade dulling from improper storage | Sheath wear from extended field use | Blade corrosion in wet conditions |
Built for Leica Geosystems equipment owners
Run the jobsite around your equipment
Gradelog is the AI field platform for contractors — grade shots, photo documentation, calibration tracking, and as-built reports, all tied to your gear.
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Leica Midi Sonde 8/33kHz 850289 - Dual Frequency Sonde for Non-Metallic Pipe Location
$605.00

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