Johnson 40-6648 User Manual

©2017 Johnson Level & Tool 1
Self-Leveling Cross and Line Laser
Model No. 40-6648
Instruction Manual
Congratulations on your choice of this Self-Leveling Cross and Line
Laser. We suggest you read this instruction manual thoroughly before
using the instrument and save this instruction manual for future use.
This is a Class II laser tool and is manufactured to comply with CRF 21,
parts 1040.10 and 1040.11 as well as international safety rule IEC 285.
1832i-English_Manuals 4/27/17 2:14 PM Page 1

Johnson 40-6648 Specifications

General

Model	40-6648
Category	Measuring Instruments
Type	Digital Multimeter
Power Source	9V Battery
Display	LCD
Range	Varies by function
Resolution	Varies by function
Units of Measure	Volts, Amps, Ohms
DC Current Range	200µA to 10A
Resistance Range	200Ω to 20MΩ
Battery Required	Yes
DC Voltage Range	200mV to 600V

Summary

Features and Functions

Safety Instructions

Warning Labels

Parts Identification

Operating Instructions

Battery Installation

Steps to correctly install batteries into the laser tool for operation.

Self-Leveling Mode Usage

Instructions for operating the laser in its automatic self-leveling mode.

Tilt (Manual Level) Mode Usage

Instructions for operating the laser in manual tilt mode for angled projections.

Visibility Enhancement Tips

Advice for improving laser beam visibility in bright or challenging conditions.

Care and Handling

Accuracy Verification

Plumb Accuracy Check

Procedure to verify the vertical alignment accuracy of the laser's plumb beam.

Horizontal Transverse Accuracy Check

Procedure to verify the left-to-right horizontal accuracy of the laser beam on a wall.

Horizontal Pitch Accuracy Check

Procedure to verify the horizontal accuracy of the laser beam relative to the tool's position.

Application Examples

Troubleshooting Guide

Technical Specifications

Product Warranty Information

Warranty Registration