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Timber Processing Magazine

L-741 Ultra-Precision Leveling Laser with Plumb Laser Beam

Bore squareness alignment laser

Entry-Level Laser Alignment System for Leveling and Squaring Machinery

The L-741 Ultra-Precision Levelscan® leveling and squaring laser is part of a line of more affordable, yet highly versatile and accurate machine alignment systems designed to quickly measure and correct machine geometry errors with minimal setup. An entry-level laser alignment system, the L-741 quickly finds and fixes flatness and squareness/plumb errors of most high-accuracy machine tools and other alignment applications.

Unsurpassed Plane Flatness

One of the critical components of any laser alignment system is the straightness or surface flatness of the laser beam or plane, as this is the reference from which the measurements are made.

The L-741 features the flattest laser plane in the world. Its continuously rotating laser plane is flat to 1/2 an arc second (0.00003"/ft or 0.002 mm/M) in a 360º sweep and 1/4 arcsec in a 90º sweep (0.000015"/ft or 0.001 mm/M).

100' Squareness Measuring Capability

It also features a plumb laser that is square to the laser plane to within 1 arc second (0.00006"/ft or 0.005 mm /M). This plumb laser can be projected out 100' (30.5 M), allowing squareness of even the tallest machine in the world to be easily checked. The L-741 laser alignment system also features 2 built-in level vials that are accurate to 1 arc second.

New Line of Wireless Targets

Another critical component of laser alignment systems is the resolution of the targets. This determines how close the measurements can be made.

The L-741 laser alignment system utilizes our new line of wireless targets (A-1519-2.4ZB and A-1520-2.4ZB) that feature up to 0.00002" (0.0005 mm) resolution, large measuring ranges of up to 1" (25 mm) and an 2.4 GHz "Zigbee" radio communication with our R-1355-2.4ZB Ruggedized Nomad PDA, which can simultaneously display up to targets.

These targets are all powered by rechargeable batteries, are lightweight and can be used as digital height gages when used with precision inserts. And like all Hamar Laser alignment systems, the targets provide live alignment data so misalignment errors can be fixed without changing the setup!


For applications with tolerances of 0.00002"/ft or 0.0017 mm/M or higher, the L-741's applications include:

  • Checking the flatness of almost any surface (squares, frames, ways, flanges, circles, etc.)
  • Measuring and leveling machine beds and ways, large bearing surfaces, and fabrications
  • Checking the squareness of any vertical machine axis or surface to a horizontal axis or surface
  • Checking plumb of an vertical surface up to 100 feet (30.5 meters)
  • Checking way twist and parallelism between horizontal surfaces
  • Measuring surfaces up to 200 feet (61 meters) long with 1 setup
  • Collecting data for and analyze lines of motion using our Machine Tool Geometry or Plane5 Software.

Flatness analysis softwareGeometry Analysis Software

For wireless recording and analyzing laser alignment system data, our color, 3-D surface flatness and squareness analysis software, Plane5, simplifies and streamlines the data analysis process. It can measure up to 7 different surfaces in one project setup file and present a color, 3-D graph of the flatness and squareness analysis for each surface.

View brochure [PDF, 618K]

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