View, Store, and Share

Quick distance readings and advanced calculations at your fingertips. Connect to a smartphone or tablet to overlay measurements on a photo or sketch to share with others.


  • Clearly view measurements on the large, backlit, 4-line display
  • Inclination angle measurement allows indirect measurements for hard to reach areas
  • Adjust units instantly to inches, feet, or meters
  • Bluetooth® connection to smartphones and tablets to view, store, and share data
  • Android® and iOS® Apps to overlay measurements onto a photo or sketch


Measuring Accuracy ± 1/16 inch (±1.5mm)
Range 229 feet (70 m)
Measuring Units inches, feet, meters
Angle Range ± 65°
Angle Accuracy ± 0.5
Bluetooth Range 33 ft (10 m)
Ruggedness IP 54 Dust Proof, Splash Proof
Memory Storage 20 Measurements
Batteries 2 x AA (Included
Auto. Shut-Off After 3 Minutes of Inactivity
Includes soft carrying case and two AA batteries

Ordering Information

Catalog Number Description Weight
lb. kg
36813 micro LM-400 Laser Distance Meter  0.44  0.22 
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RIDGIDsketch is a tool for mobile devices that allows you to calculate and communicate measurements of your project. It can be used on its own or in conjunction with a RIDGID LM-400 Laser Distance Meter. The app will connect to your LM-400 via Bluetooth® and wirelessly receive the exact measurements from the device. RIDGIDsketch works in both drawing mode and photo overlay mode allowing you to develop precise room plans or annotate measurements within a photo.

RIDGID is the trademark of Emerson Electric Co. or its affiliates and is registered in the U.S. and elsewhere. All third-party trademarks are those of their respective owners.

The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of such marks by Emerson Electric Co. is under license. Other trademarks and trade names are those of their respective owners.

iOS is registered trademark of Apple Inc.

Android and the Android logo are trademarks of Google Inc.

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