excavator working with an underground utility
Discover the depths

Take an updated approach to path marking, with the 3M EMS warning tape 7900 series that helps alert the user that there is a risk of damage when digging near underground utility lines by providing visual verification powered by our EMS technology.

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3M Locating and Marking

  • Underground utilities may be hidden, but it’s still important to know exactly where they are.   3M™ Locators and Markers provide a complete system for locating, marking and mapping vital underground assets.

    From markers that give an exact path and estimated depth of underground utilities, to markers that store information, to utility locators that interface with GPS/GIS field mapping instruments, 3M offers the precision tools you need to manage your assets. Together, these tools provide a complete solution with the performance and reliability you trust from 3M. Learn more about 3M's utility locating products, line locator industry solutions, or utility locator resources.


Discover how 3M can help you solve your locating and marking challenges no matter the utility you serve.

  • Gas


Quickly find a Locating and Marking product below.

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Have questions? Let our 3M experts help.
Image of cell phone on 3M asset tracking app
Introducing the 3M™ Asset Tracking App

Need to manage your assets? There's an app for that.

Scan Assets

Access Data Sheets

Export GPS-enabled Pins


Key Resources for Locating and Marking

View Resource Library for Locating and Marking
Woman holding a 3M locator in 3M saftey gear

Trace the underground

Download our latest locating and marketing whitepaper “Magnetic Resonators for Locating Underground Assets” – and explore the latest technology that can help you improve your path marking capabilities.

Download Whitepaper PDF