Johnson Level 40-6242 User Manual

GL100 MX LASER PRECISION LEVEL

with Green Laser Technology™

Operating instructions:

The model GL100 MX Laser Precision Level is a hand carried precision level with a built in GREEN LASER! This Laser
projects a beam of light from the end of the level and produces an eye visible laser dot that can be seen on almost any
surface even in direct sunlight. The laser actually extends the level reference to over 500 FEET and is ten times brighter
than standard red laser beams.

Here's How It Works....

1. Measure level or plumb using the precision level vial or two plumb vials. They're built in and factory set.

2. Turn the laser on by turning the battery cap switch.

3. Mark the center of the laser dot and subtract 1/2 inch to reference the bottom of the level.

IT'S THAT SIMPLE!

Avoid Exposure
Battery Extension Level Vial Warning and Certification Label

Battery Cap 2 Plumb Vials Product Identification Beam Extender

ON-OFF Label

Caution - Use of controls or adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.

The level and plumb vials built into the GL100 MX Laser Precision Level are used just like standard spirit levels. Just
center the bubble between the long index lines for a level indication. Remember, the more accurate the bubble is centered
between the lines, the more accurate the laser beam will be for referencing level. Note: Give the bubble a few seconds to
settle after moving the level.

Turn the laser beam on by rotating the battery compartment end cap
clockwise. To turn the beam off, turn the end cap counter-clockwise a
quarter turn. Avoid over tightening since it isn't necessary. (CDRH: The

battery cap On/Off is an alternate to the beam attenuator requirement.)

The laser beam produces a bright green spot on most any reflective surface. However, the laser dot can be seen best when
the surface is of a lighter color (i.e. wooden 2x4s, white wallboards, forms, and anything colored Green.) Dark colors soak
up the light so the laser dot will be less bright. The GL100 MX Laser Precision Level is bright enough to be seen in direct

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sunlight. The laser dot can be seen better when the sun is shaded from shining directly onto the laser dot. Standing in front
of the sun or using a sun screen (your hand, your helper’s body, a piece of paper, etc.) will work.

The laser beam center is positioned 1/2 inch from the bottom of the level.
This means that a half inch needs to be subtracted from the center spot of
the laser dot to reference the actual bottom of the level.

Mark the bull’s eye of the circular "target" and subtract 1/2 inch. This second mark is level with the bottom of the GL100
MX Laser Precision Level within 1/8 inch out to 100 feet or any distance in between!

Helpful hints:

1. To find the laser dot on long shots, follow the laser beam out to the marking spot by sticking a piece of paper or any
target in front of the beam and tracing the beam path to the marking spot. This works great in bright sunlight conditions.
Also, even though the laser beam is low powered, avoid looking directly into the laser beam. The laser beam is quite
bright.

2. To aim the laser in the general direction of the shot, sight down the top of the laser by looking lengthwise down the top
of the level at the target spot.

Battery Replacement:

Unscrew the battery compartment end cap and remove the batteries. Replace with 2 Duracell, MN1500 “AA” Alkaline
Batteries or equivalent.

Remember: The negative ends (the flat end of the battery) goes in first. The positive ends with the button end sticking
up go toward the brass end cap.

Maintenance:

The GL100 MX Laser Precision Level is designed to be weather resistant and construction tough, but like any precision
instrument, general care should be taken to avoid abuse.

1. The precision glass level vials are protected and shock mounted. Avoid direct contact with level vials.

2. The front optic window is coated with a high performance film. Clean with a lint free cloth or swab using a premium
glass cleaner solution.

3. Clean the outside of the level with a damp cloth.

Calibration: The GL100 MX Laser Precision Level is factory calibrated and should not require any adjustments for the
life of the unit. However should adjustments or repairs be required, contact Laser Tools Co., Inc. directly.

Accessories:

The GL100 MX Laser Precision Level can be mounted to standard
camera tripods for stand alone operation. However, to speed up the fine
tuning of the level vial, the AP100A Leveling Adapter Plate or the
AP1000 Transit Adapter Plate is recommended. Both the AP100A and
AP1000 are designed with a 3 or 4 position adjustment system that
quickly and accurately centers the bubble within the level. This means
that the GL100 MX Laser Precision Level can be leveled and turned in a
360 degree circle to shoot in any direction without wasting time to
readjust the tripod for level. The AP100A and the AP1000 can be used
on any flat surface.

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