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SubSurface Instruments, Inc. AML Pro All Material Locator

AML Pro: Find Buried PVC/PE Pipes Using GPS & Advanced Digital Patented Technology

SubSurface Instruments PL-2000 Cable Locator
SSI Video
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SSI Video
SubSurface Instruments, Inc. Logo SubSurface Instruments, Inc. Logo

SubSurface Instruments, Inc. AML Pro All Material Locator

Find buried PVC/PE pipes using GPS & advanced digital patented technology.

The All-New AML PRO™ is a scientific instrument that utilizes ultra-high radio frequencies to find differences in densities. This offers the best method for locating PVC & PE pipes and nearly any other object that has an edge.

  • New Microprocessor Intelligence
  • Patented Radio Wave Technology
  • Lightweight Construction (2.5 lbs.)
  • Noise Isolating Headphones
  • Rechargeable Lithium Battery
  • Customizable User Preferences
  • USB Powered Port
  • Durable ABS Housing
  • Backlit Display
  • GPS Plotting & Tracking
  • 32 Sensitivity Settings
  • Digital Leveling Meter
  • Digital Targeting Indicator
  • 3 Year Limited Warranty

If you've got questions, we've got answers: Use our Quick Question form:


The key to how the AML detects PVC/PE pipes and to identifying the size or length of a pipe is to understand how its radio frequency detects buried plastic and other objects.

Video 1 click to view

Holding the AML's handle parallel to the ground, scan the area of the suspected pipe or buried object until one or both of the AML's target indicators activate.

Video 2 click to view

While the left or right target indicator is activated, rotate the AML until both LED target indicators light simultaneously, triggering the AML's tone and laser marker.  This alert indicates that the pipe or object has been detected and that the AML is now parallel with the underground object.

Video 3 click to view

With the AML in parallel with the pipe or underground object, you can now scan the entire length of the object's edge.  As an alternative, utilize the "W" method of scanning by sweeping the area in a back-and-forth "W" motion, marking the object's location and run direction as it is tracked.

Physical Dimensions
Height13 in. / 33.0cm11 in. / 27.9cm
Length14 in. / 35.6cm14 in. / 35.6cm
Width06 in. / 15.2cm06 in. / 15.2cm
Weight2.5 lbs. / 1.13kg02 lbs. / 0.90kg
Physical Dimensions
Batteries(3) 9-Volt Alkalines(3) 9-Volt Alkalines
Battery Packs21
Est. Alkaline Battery Life25 hours40 hours
 min. life: 4 hoursmin. life: 5 hours
Auxiliary Lithium Battery Packstypical life: 80 hourstypical life: 100 hours
 min. life: 20+ hoursmin. life: 25+ hours
Transmitter Frequency2.45 GHz2.45 GHz
Warranty Badge 3 year limited warranty


The AML is guaranteed to be free of defects in material and workmanship for a period of 3 years or 36 months to the original end-user purchaser. Physical abuse, battery acid and water damage, as determined at the sole discretion of SubSurface Instruments Inc., are explicitly and entirely excluded from this warranty. SubSurface Instruments' Liability under this warranty is limited to repair, service, or replacement of the product, at the sole discretion of SubSurface Instruments Inc. No other warranty is expressed or implied.

Any unit suspected to be in need of repair or retuning may be returned to SubSurface Instruments Inc. Customer is responsible for freight to the manufacturer. SubSurface Instruments will pay for freight back to customers located within the continental US.

This video tutorial will guide you step by step through the proper operating procedure of your AML - All Materials Locator. Upon completing this video, you will be able to verify that buried PVC pipes are located and identified with certainty.

User Guide

User Guide

Change in Density

Change in Densities

Sensitivity Levels

Sensitivity Levels

Factory Training Agenda

SSI strongly encourages new operators to attend a factory training session in Green Bay, WI in order to fully understand the AML's capabilities, limitations, and to learn and practice various operating techniques. Below is the agenda for the topics to be covered and their durations. Class format and/or focus can be customized for the client's

A short introductory session that explains how the unit works.

  • Instrumentation
  • Theory of Operation
  • Controlled Environment Location
  • Capabilities and Limitations
  • Techniques

A practical application that teaches how to locate various targets (pvc pipe, gas, sewer, water, power, cable, rubber, fiber optics, etc.)

  • Marked Sites
  • Unmarked Sites
  • Direction
  • Soil Conditions

AML PRO Display


Advanced GPS Mapping
Mark your coordinates on the job site with advanced GPS tracking and export to other devices via a data file through the USB mini port.


Increase the accuracy and speed of finding sub-surface objects.  A digital left and right meter hones the operator to the exact location of an underground object so it can be marked and tracked efficiently.


Designed to provide the highest degree of accuracy available, the AML Pro has 32 individual sensitivity settings that allows the user to zero out unwanted feedback and focus directly on the object itself.


Powerful USB flexibility allows users to export GPS coordinates, import the latest firmware updates, and connect to the auxiliary Lithium battery source.

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