PLS 480 System - Fully Self-Leveling Square, Level and Plumb Reference System
Fully self-leveling square, level and plumb reference designed for concrete, foundations, walls, square on slope and horizontal-level benchmarks.
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Menu Switch
- On/Off / Square Lines and Down Point
- On/Off / Level Lines
- First Press: Self Leveling Mode
- Second Press: Over Ride Self Leveling Mode
- Third Press: Off
- Pulse: Outdoor Mode to use with SLD Detector - Square and Level
- Green Light: On
- Red Light: Exceeds tilt
- Amber Light: Battery Low
- Solid Light: Interior
- Blinking Light: Exterior
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Universal Base-Tripod Adapter
The universal tripod adapter is included with the PLS 480 SYSTEM. The adapter has two components. 1) Floor and Batter Board Base and 2) Tripod - Fine Tune Base. The two components can be used separately or together depending on the job site application. When using your PLS 480 on the floor or concrete slab, attach the PLS 480 to the combined adapter (top and bottom components together) by inserting its 1/4 - 20 bolt into the 1/4 - 20 insert on bottom of the PLS 480.
The reversible front foot can be turned around by loosening the screw-bolt and rotating to allow a straight edge against bottom track. The fine tune adjustment knob allows the PLS 480 (or other PLS laser) vertical lines to move incrementally right or left.
The top component also swivels right and left for maximum utility of the laser.
![PLS-480_6]()
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When using your PLS 480 on a tripod secure the top component of the adapter to the tripod stud. Secure the PLS 480 to the adapter and position the down point of the laser to point through the tripod handle or cantilever the tool so the down point can be seen between the tripod legs.
You can now adjust the laser for square layout using the down point as your spring point and capturing the square laser lines with your SLD Detector.
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When using your PLS 480 on batter board attach the PLS 480 to the combined adapter (top and bottom components) and place the PLS 480 and adapter on to the batter board. Secure the PLS 480 to the batter board with the threaded clamp on back of the adapter. The down beam of the PLS 480 should project closely in front of the batter board. Use the adapter adjustable knobs to turn the square beams of the PLS 480 (or other PLS laser) right or left to meet the target or SLD Detector.
![PLS-480_8]()
Check Plumb
Place the PLS 480 on the standard floor base and position the PLS 480 so that the down point is visible on the floor. Mark the down point position and without moving the laser also mark the intersecting point at which the two vertical lines meet on the ceiling.
Turn the laser 180 degrees and place the down point on the original mark on the floor. The intersecting point on the ceiling should match the original ceiling mark. If there is a difference between the original ceiling mark and second mark, the error of the plumb beam is half that difference.
Check Level
Choose two interior walls approximately 15'-0" apart (see Fig. 1).You can use 2 x 4s for targets.
Turn on the PLS 480 to Level setting #1 (level). With the PLS 480 six inches away from and facing target #1, carefully mark the center of the line. Label this mark A1. Swivel the laser 180 degrees and mark the center of the line on target #2. Label this mark B1.
Move the PLS 480 six inches away from and facing target #2. Carefully mark the center of the line. Label this mark B2. Swivel the laser 180 degrees and mark the center of the line on target #1. Label this mark A2.
You now have two centers of elevation at each target. Carefully measure the distance between centers of each set of marks. If there is a difference, subtract one measurement from the other. This calibration method magnifies any error by a factor of two. Therefore divide any difference by two to find the true error.Your PLS 480 should have an error of no greater than 1/8in. within 60ft.
Check Square
Checking the PLS 480 on the job site using Pythagoras 3-4-5 Triangle:
- Set up over the center of PEG (A) using the plumb down laser dot.
- Using one of the 90 degree beams put PEG (B) in the ground at an exact distance of 15M/45 FT from PEG (A).
- Using the other 90 degree beam, put PEG (C) in the ground at an exact distance of 20m/60 FT from PEG (A).
- Now measure with a tape diagonally from PEG (B) to PEG (C). The distance should be 25M/75 FT.