Can the GA-72Cd detect non-ferrous metals like copper or aluminum?

No. The GA-72Cd is designed exclusively for ferrous metal detection (iron and steel). It will not locate buried copper water lines, aluminum conduit, or other non-ferrous materials. For those applications, you need ground penetrating radar or a dedicated non-ferrous locator system.

Does the GA-72Cd tell me how deep a buried object is?

Not precisely. The GA-72Cd detects the presence and location of ferrous objects and provides signal strength feedback, but it does not calculate depth directly. Contractors typically use the signal intensity to estimate relative depth, then verify with careful hand excavation or test holes.

How does soil type affect the GA-72Cd's performance?

The GA-72Cd works reliably in all soil types—clay, sand, rock, fill—because magnetic detection is not hindered by soil composition the way radar signals are. However, high metal content in certain soils or fill can create background noise, so systematic scanning and marker placement help confirm real targets.

What should I do if I get false positives on a survey?

False positives often come from surface metal debris, nearby power lines, or large metal structures. Keep the device away from these interference sources, use a slow, deliberate scanning pattern, and always verify suspected targets with visual inspection and test excavation before committing to a location.

What are the battery requirements and runtime for the GA-72Cd?

Refer to your Schonstedt documentation for specific battery type and expected runtime. For extended field use, carry spare batteries to avoid depletion during a full-day survey. Battery condition directly affects sensitivity, so replace batteries if signal strength drops unexpectedly.

Is the GA-72Cd portable enough for one-person operation?

Yes. The handheld design is specifically engineered for one-person use in the field. You hold it at the proper height above grade, scan methodically in grid patterns, and mark locations as you find them. No assistant or additional equipment is required for basic operation.

SitePro 27-KS100HVK-4C Horizontal / Vertical Rotary Laser Exterior Package with Inches Rod and Tripod

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At a Glance

Product Type: Magnetic Locator
Detection Type: Ferrous Metal Detection
Primary Users: Surveyors, Utility Contractors
Model: GA-72Cd
Key Feature 1: Industry standard magnetic detection
Key Feature 2: Detects buried ferrous objects

SitePro27-KS100HVK-4CSKU GA-72CdNew

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SitePro 27-KS100HVK-4C Horizontal / Vertical Rotary Laser Exterior Package with Inches Rod and Tripod

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Quick Answer

What is the SitePro 27-KS100HVK-4C?

The SitePro 27-KS100HVK-4C Horizontal / Vertical Rotary Laser Exterior Package with Inches Rod and Tripod is a SitePro Rotary Laser. It's available from Express Tools as an authorized SitePro dealer with same-day shipping on in-stock orders.

FIELD APPLICATIONS

What contractors use this rotary lasers for

Property Marker and Survey Monument Recovery

Surveyors use the GA-72Cd to locate iron property monuments and markers that have been buried or obscured by years of site development. Quick magnetic detection eliminates hours of manual probing and ensures accurate boundary reference points for legal descriptions and site layout.

Utility Locating and Hazard Avoidance

Utility contractors and excavation crews deploy the GA-72Cd before breaking ground to identify buried steel water lines, gas service markers, and abandoned iron pipelines. Early detection prevents costly strikes and safety hazards that could shut down the job.

Buried Tank and Infrastructure Detection

Environmental and remediation contractors use the GA-72Cd to locate and map buried ferrous tanks, metal drums, and underground steel structures on contamination or demolition sites. Accurate positioning informs excavation planning and hazard containment strategies.

Site Assessment and Pre-Construction Survey

General contractors and site managers employ the GA-72Cd during pre-bid and pre-construction walks to identify subsurface ferrous objects that could affect grading, foundation work, or utility coordination. This upfront detection prevents surprises during active construction.

Verification of Subsurface Features

In conjunction with ground penetrating radar or historical site records, the GA-72Cd confirms the presence and location of ferrous utilities and structures identified during planning. This redundant verification protects high-value projects and regulated sites.

PRODUCT OVERVIEW

Product Description

The SitePro KS100HVK-4C rotary laser package delivers a complete, field-ready dual-plane leveling system designed for grading crews, site prep contractors, and finish grade operators who need to hit the ground running. Every component in this kit is factory-matched for direct compatibility, eliminating the guesswork of sourcing individual accessories and ensuring your crew is productive from the first setup.

System Overview and Jobsite Applications

Built around SitePro's KS100HV dual-plane rotary laser, the KS100HVK-4C package pairs the instrument with an inches-graduated leveling rod, a heavy-duty tripod, and a rugged carrying case. The horizontal plane capability covers site leveling, drainage grading, and foundation layout across large open areas, while the vertical plane mode supports column plumb checks, wall layout, and squaring structural grids. The inches-graduated rod makes this kit particularly well-suited for US-standard jobsites where decimal-foot or metric readings would create conversion friction on the crew.

Key Specifications

Laser Type: Dual-plane self-leveling rotary laser (horizontal and vertical)
Self-Leveling Range: ±5° automatic compensation
Working Range: Up to 1,200 ft diameter (with detector)
Accuracy: ±1/16 in at 100 ft
Rotation Speed: Selectable (slow, medium, fast)
Rod Graduation: Inches and fractions (imperial/US standard)
Power Source: Rechargeable battery pack included
IP Rating: Weather-resistant housing for outdoor use

What's in the Kit

SitePro KS100HV horizontal/vertical rotary laser instrument
Laser receiver/detector for extended range use in bright conditions
Inches-graduated leveling rod (telescoping, contractor-grade)
Heavy-duty adjustable tripod with quick-release head
Rechargeable battery pack and charger
Protective hard-shell carrying case with molded foam insert
Operator manual and calibration certificate

Job Applications

Finish Grading and Drainage Slopes: Set the laser on the tripod, dial in your benchmark elevation, and run rod shots across the entire pad to confirm drainage grades before final compaction. The inches rod eliminates on-site conversion when working from engineer plans in fractional format.

Foundation and Footing Layout: Switch to vertical plane mode to project a precise reference plane for squaring building corners, aligning form panels, and checking column plumb over multi-story heights—all with a single instrument setup.

Utility and Pipeline Trenching: Use the detector clipped to a grade rod to maintain consistent invert elevations along trench runs, reducing re-dig cycles and keeping pipe crews moving efficiently without a second person on grade checks.

Concrete Flatwork and Slab Prep: Shoot elevations across the subgrade before placing screed rails to verify uniform bearing depth, and recheck finished slab surface after screeding to confirm tolerance compliance before the pour sets.

Compatible Accessories

Related Guides

Frequently Asked Questions

Does this package include a laser detector for outdoor use?: Yes. The KS100HVK-4C kit includes a laser receiver/detector, which is essential for picking up the laser beam in bright daylight conditions at extended ranges. Without a detector, rotary lasers are typically visible only in low-light environments.
Is the leveling rod in this kit graduated in inches or decimal feet?: The rod included in the 4C package is graduated in inches and fractions—the US standard format. If your project specifications are in decimal feet or metric, SitePro offers alternate rod options sold separately that are fully compatible with the KS100HV instrument.
What is the maximum working range of the KS100HV laser?: With the included detector, the KS100HV covers a working diameter of up to approximately 1,200 feet, making it suitable for large site grading, subdivision infrastructure, and commercial pad work where long rod shots are routine.
Can the KS100HV be used for both horizontal leveling and vertical alignment on the same job?: Yes. The KS100HV is a dual-plane instrument that can project both a horizontal reference plane for elevation work and a vertical reference plane for layout and plumb applications. Switching between modes is done at the instrument without additional accessories.

Why This Equipment

Auto Self-Leveling

Compensates for job site movement and setups — no manual leveling required.

Long Range

Reach 2,600+ ft with a receiver — covers large pads and site-wide grading without moving.

IP55+ Protection

Dust-tight and water jet resistant — built for outdoor construction in any weather.

Radio Remote

Change grade or elevation from the cab or anywhere on site without walking back.

KIT CONTENTS

What's In The Box

Schonstedt GA-72Cd Magnetic Locator (handheld unit)

Why Buy This?

The right rotary laser pays for itself in weeks.

A grade checker costs $600–800 per day. A quality rotary laser setup eliminates that cost indefinitely — and works faster. One operator with a good laser and receiver can cover ground that used to take a two-person crew.

The gap between a budget unit and a professional-grade one shows up in the field: self-leveling range on uneven pads, IP55+ protection through rain and dust, and radio remote control so you're not walking back to the instrument every time the job moves.

Express Tools is an authorized dealer with genuine, factory-fresh inventory and same-day shipping on in-stock units. We know this equipment and can answer spec questions before you order.

TECHNICAL SPECS

Specifications

Technical Specs

Manufacturer data and field-verified measurements.

Product Type	Magnetic Locator
Detection Type	Ferrous Metal Detection
Primary Users	Surveyors, Utility Contractors
Model	GA-72Cd
Key Feature 1	Industry standard magnetic detection
Key Feature 2	Detects buried ferrous objects
Key Feature 3	Portable handheld design
Key Feature 4	Reliable subsurface location capability
Key Feature 5	Proven accuracy for professional use
Use Cases	Locating buried property markers; Finding survey monuments; Detecting buried tanks; Identifying ferrous pipes; Site hazard assessment; Utility locating
Setup Steps	Power on the device \| Calibrate according to manufacturer specifications \| Hold at appropriate height above ground surface \| Scan area systematically in grid pattern \| Mark detected locations
Pro Tips	Use systematic scanning patterns for thorough coverage \| Account for soil type when interpreting readings \| Keep device away from large metal structures during operation \| Mark all detected locations immediately \| Verify findings with visual inspection when possible
Compatible Equipment	Survey poles; Marking flags; Excavation equipment; Ground penetrating radar systems
Common Issues	False positives from surface metal objects \| Reduced sensitivity near power lines \| Battery depletion in extended field use \| Difficulty distinguishing depth of buried objects