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micro LM-400 Advanced Laser Distance Meter

micro LM-400 Advanced Laser Distance Meter

View, Store and Share.

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

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  • 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.


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.


Measuring Accuracy ± 1/16 inch (±1.5mm)
Range 229 feet (70 m)
Measuring Units Inches, feet and 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 AA (included)
Automatic Shut-Off After 3 minutes of inactivity
Case Includes soft carrying case

Ordering Information

Catalog Number Description Weight
lb. kg
36813 micro LM-400 Laser Distance Meter  0.44  0.20 
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limited ability to display accurate measurements on Rigid Sketch

Why do you build a laser measurement tool with accuracy to the 1/16th of an inch and provide a companion software tool that rounds measurements to the inch? This makes this nicely designed piece of software effectively useless for any form of construction. Are there plans to modify the tool such that accuracy to the 1/16th of an inch will be displayed?
Asked by: grady95035
Okay precision, and whether it is useful for use in the area of construction and maintenance in general. But I think if measuring horizontal angles would be better, because now only measures vertical angles and only up to 65 °. thx
Answered by: venados
Date published: 2015-04-25
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