How to Use Pendulum Lock on PLS Lasers

Lewis Nelson of Fluke unpacks PLS Laser’s new pendulum lock feature

Why a Pendulum Lock?

We developed our newest handheld lasers with a pendulum lock for a few reasons. First, a pendulum lock protects the pendulum from moving while in transport, which is important as it avoids potential wear due to vibration or impact. This helps your laser stay calibrated for a longer time. Second, since all of our lasers are self-leveling and turn off when out of level at + or – 4 degrees, the pendulum lock is used to set manual or tilt mode.  In this mode, the laser will project a line or dot while tilted and will not turn off, which is helpful to project for a railing or other slope installation. Simply put, there are times when you need a sloped line and the pendulum lock allows you to project a line while the laser is out of level.

PLS Laser Levels With Pendulum Lock

How Do I know if My Laser is in Lock Mode?

Once the PLS Laser pendulum is locked, there are three indicators that will tell you that the pendulum is in lock mode to ensure that you’re not using your laser in a self-leveling laser application.

  1. The pendulum on the right-hand side of your handheld laser will be in the locked position as shown below.














2. The pendulum lock indicator light will be illuminated on your laser. You can find that light on the left side of your laser.










3. The laser beam that is projected on the wall will blink twice every few seconds indicating to the user that the laser is out of level


It is important to verify one of these three pendulum lock indicators before you commit to a self-leveling application.


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