HAMAR LASER Triple Scan L-743 User manual

Important Notices
Please Read First
Laser Warm Up
Your new laser has been calibrated while it is fully warmed up. In order to ensure proper
calibration, we recommend that you let your laser warm up for at least 30 minutes for
single-plane lasers (L-730 or L-740) and up to 45 minutes for multi-plane lasers (L-732, L-
742, L-733 and L-743).
This does not mean the laser spindles need to be rotating; only that the laser beam should
be turned on for the recommended time.
You can use your laser prior to the warm up time to buck it in (make it parallel) to your
references. However, doing this may result in some laser drift. Accordingly, if you use the
laser prior to the warm-up period, it is recommended that you go back and check your
references before you start taking the alignment measurements. For best results, do not
start taking measurements until the recommended warm time has passed.
It is always a good metrology practice to periodically check your reference points to ensure
the laser or the base (instrument stand, table or other supporting base) it sits upon has not
drifted. Please note that most drift problems are caused by what the laser sits upon, not
due to the laser drifting itself (after the warm up period).
Please call 1-800-826-6185 or [phone] if you have any questions or concerns.
CAUTION!
Surge Protection Strongly Recommended
To ensure the long life of your laser, it is important to plug the A/C adapter into a surge-
protected power source. Despite internal surge protection, a large power surge may cause the
laser diode to burn out, requiring the laser to be returned to the factory for extensive repair.
Failure to plug the A/C adapter into a surge-protected power source may void the warranty.

WARRANTY
Hamar Laser Instruments, Inc., warrants each instrument and other articles of
equipment manufactured by it to be free from defects in materials and
workmanship under normal use and service, its obligation under this warranty
being limited to making good at its factory any instrument and other article of
equipment which shall, within one year after shipment of each instrument and
other article of equipment to the original purchaser, be returned intact to Hamar
with transportation prepaid, and which Hamar’s examination shall disclose to
Hamar’s satisfaction to have been thus defective; other than this express
warranty, Hamar neither assumes nor authorizes any other persons to assume for
it any other liability or obligation in connection with the sale of its products.
This warranty is not applicable to instruments or other articles of equipment
manufactured by other companies and limited by a warranty extending for less
than one year. In such an event, the more limited warranty applies to said
instrument or article of equipment.
This warranty shall not apply to any instrument or other article of equipment
which shall have been repaired or altered outside the Hamar factory, nor which
has been subject to misuse, negligence, or use not in accord with instructions
furnished by the manufacturer.
The software described in this manual is furnished under a license agreement and
may be used or copied only in accordance with the terms of the agreement. It is
against the law to copy the software on any medium for any purpose other than
the purchaser's personal use.
The information in this manual is subject to change without notice. No part of
this manual may be reproduced by any means, electronic or mechanical, without
written permission from Hamar Laser Instruments, Inc.
© Copyright Hamar Laser Instruments, Incorporated, 2019
5 Ye Olde Road, Danbury, Connecticut 06810

Table of Contents
The L-743 Ultra-Precision Triple Scan®Laser............................................................................................. 1
The L-733 Precision Triple Scan®Laser ...................................................................................................... 3
The L-742 Dual Scan Ultra-Precision Roll Alignment Laser....................................................................... 4
The L-732 Dual Scan Precision Roll Alignment Laser ................................................................................ 5
Laser Controls............................................................................................................................................... 6
Differences in the Lasers........................................................................................................................... 6
Providing Power to the Laser.................................................................................................................... 7
Warming Up the Laser.............................................................................................................................. 7
Using the Control Panel ............................................................................................................................ 8
The Precision Level Vials............................................................................................................................. 9
Reading the Precision Level Vials ............................................................................................................ 9
Reading the L-740SP Split-Prism Level Vials.......................................................................................... 9
Calibrating the Level Vials ....................................................................................................................... 9
Zeroing the Targets........................................................................................................................ 10
Calculating the Calibration of the Level Vials – Roll Axis ........................................................... 10
Setting the First Level Vial – Roll Axis......................................................................................... 12
Calculating the Calibration of the Levels Vials – Pitch Axis ........................................................ 12
Setting the First Level Vial – Pitch Axis ....................................................................................... 13
Checking the Levels for Accuracy................................................................................................. 13
Measurement Overview .............................................................................................................................. 14
Selecting Reference Points on Machine Tools........................................................................................ 14
Selecting Reference Points on Process Mills.......................................................................................... 14
Measurement Summary .......................................................................................................................... 15
Measuring Straightness.................................................................................................................. 15
Measuring Flatness ........................................................................................................................ 16
Measuring Squareness ................................................................................................................... 16
Measuring Levelness ..................................................................................................................... 17
Measuring Parallelism ................................................................................................................... 17
Level to Earth Measurements ................................................................................................................. 17
Setting Up and Leveling the Laser................................................................................................. 17
Laser Buck-in.............................................................................................................................................. 18
Three Point Buck-In (Flatness) ............................................................................................................... 18
Three Point Buck-In Procedure Using One Target........................................................................ 18
Setting up the Equipment............................................................................................................... 18
Performing the Three Point Buck-In.............................................................................................. 19
Three Point Buck-In Procedure Using Multiple Targets ............................................................... 20
Two Point Buck-In (Straightness)........................................................................................................... 20
Normal versus Remote Buck-In.............................................................................................................. 21
Normal Buck-In ............................................................................................................................. 21
Remote Buck-In ............................................................................................................................. 22
Appendix A – Troubleshooting Guide........................................................................................................ 24
Appendix B – Equipment Drawings ........................................................................................................... 27
Appendix C – Interpreting the A-1519/1520 Type II Calibration Reports................................................. 31
Appendix D – Care and Cleaning of Target Optics .................................................................................... 33

1
The L-743 Ultra-Precision Triple Scan®Laser
The L-743 Ultra-Precision Triple Scan®Laser is
Hamar Laser’s most versatile and powerful
machine tool alignment laser. It has been designed
specifically for 3-5-axis machining centers to
measure and correct machine geometry. In most
cases, all it takes is one setup to measure flatness,
straightness, parallelism and squareness of the main
axes of most typical machining centers.
Since the system provides live measurements, any
errors that are found can be fixed with the same
setup. The laser mounts on a machine or stable base
so that the laser plane can project the measurement
reference out to 100 ft. (30.5 m) in radius for each
laser plane.
Applications: (for alignments with tolerances of 0.00002 in/ft or 0.0017 mm/m or greater)
•Machining centers (HBMs, VBMs, HMCs, VMCs,
VTLs, gantries and surface grinders)
•Automotive transfer-line wing bases
•Injection molding machines and presses
•Aircraft assembly (seat track alignment, setting water, butt and station planes, wing-to-body and body-
to-body join alignment, etc.)
Roll parallelism in:
•High-precision, laser and water-jet cutting machines
•Paper mills
•Film lines
•Circuit board drilling machines
•Printing presses
•Blown-film lines
Measuring and aligning:
•The flatness of almost any surface (squares, frames,
ways, flanges, circles, etc.)
•The squareness of up to 3 surfaces
•Measuring surfaces up to 200 ft. (61 m
) long with
one setup
•The parallelism of horizontal and verti
cal surfaces
even if those surfaces are 100 ft. (30.5 m) apart
•
Checking way twist and parallelism between
horizontal surfaces
•The straightness of horizontal and vertical
surfaces
•
The straightness and flatness of
horizontally and vertically traversing axes
•Checking plumb of a vertical surface up to
100 ft. (30.5 m)
•
Checking way twist and parallelism
between vertical surfaces
Warning!
Always operate the L-730 and L-740 series lasers described below in an upright position.
Do NOT invert!

2
Features
•3 continuously rotating laser planes with operational
range of 100 ft. (30.5 m) in radius.
•Instant on with virtually no warm-up
•Planes are mutually square to 1 arc sec (.00006 in/ft
or 0.005mm/m).
•Levels accurate to 1 arc second (.00006 in
/ft or
0.005mm/m).
•Targets provide live data display
•Uses A-1520 Single-
Axis Wireless Target with 1
Micron (.00004 in.) resolution for
higher accuracy
applications.
•Laser and targets fit into a small, portable shipping
case
•
Diode laser 2 times more stable than HeNe based
laser systems
•
Battery or AC powered
•Laser planes flat to ½ arc seconds (.00003
in/ft or 0.0025mm/m) in 180º sweep and ¼
arc second (.00001 in/ft or 0.0008mm/m) in
90º sweep).
•
Includes Pitch/Roll/Yaw base with coarse
and fine adjustments and lighted levels.
•Standard target: A-1519-2.4ZB Single-Axis
Wireless Target with 1 in. measuring range
and .0001 in. resolution.
•System uses Windows-
based software for
quickly recording and analyzing machine
geometry data
•Typical setup time 20 minutes or less
•Completely self-contained

3
The L-733 Precision Triple Scan®Laser
The L-733 Triple Scan Laser was specifically designed for
machining centers to measure and correct machine geometry.
It has all of the innovative and highly useful features of the L-
743 Ultra-Precision Triple Scan Laser, with lower accuracy
and a medium adjustment base. It is very useful for checking
the alignment of large fabrications or aligning large airplane
sections in aircraft manufacturing.
In most cases, all it takes is one setup to measure flatness,
straightness, parallelism and squareness. Since the system
provides live measurements, any errors that are found can be
fixed with the same setup. The laser mounts on a machine or
stable base so that the laser plane can project the measurement
reference out to 100 ft. (33 m) in radius for each laser plane.
Applications: (for alignments with tolerances of .0005 in/ft or (0.038 mm/m) or greater)
•Machining centers (HBM, VBM, VTL, VMC, HMC,
gantries, surface grinders)
•Water jet and laser cutting machines
•Leveling machine beds and ways
•Checking the alignment of large bearing surfaces and
fabrications
•Roll alignment (rubber, steel, textile and lower
accuracy film lines)
•Aircraft assembly (seat track alignment, setting water,
butt and station planes, wing-to-body and body-to-body
join alignment, etc.)
•Saw mills
•Vertical press alignment
Measuring and aligning:
•The flatness of almost any horizontal or vertical surface
(squares, frames, ways, flanges, circles, etc.) or axes
•The squareness of any 2 vertical surfaces or axes
•The straightness of vertical and horizontal axes
•Measuring surfaces up to 200 ft. (66 m) long with
one setup
•Way twist and parallelism between vertical or horizontal
surfaces
•The parallelism of vertical or horizontal surfaces,
even if those surfaces are 100 ft. (33 m) apart
•Way twist and parallelism between vertical or horizontal
surfaces
•The squareness of any vertical machine axis or
surface to horizontal axis or surface
•Checking plumb of a vertical surface up to 100 ft.
(33 m)
Features:
•Continuously rotating laser planes with operational
range of 100 ft. (33 m) in radius.
•Completely self-contained
•Laser planes flat to 2 arc seconds in 180º sweep and 1
arc-second in 90º sweep. Planes are mutually square
to 2 arc seconds.
•Standard target: A-1519-2.4ZB Single-Axis Wireless
Target providing live data display
•System uses Windows-
based software for quickly
recording and analyzing machine geometry data
•Typical setup time 20 minutes or less
•Diode laser 2 times more stable than HeNe-based laser
systems
•Includes Pitch/Roll/Yaw base with medium-
resolution adjustments and lighte
d levels. Levels
accurate to 2 arc seconds.
•Instant ON, with virtually no warm up
•Battery or AC powered

4
The L-742 Dual Scan Ultra-Precision Roll Alignment Laser
With two continuously sweeping, ultra-flat, orthogonal
laser planes, the L-742 is ideally suited to roll alignment
applications. The laser can be configured at the factory
to have either two vertical planes, or one horizontal and
one vertical plane, allowing a user to not only measure,
but also fix alignment problems in a fraction of the time
needed with conventional methods.
Using the L-742 you can quickly and easily check and
correct horizontal roll parallelism of even the tallest
process mills, pick up and check offset centerline
benchmarks, and perform similar alignments with
increased accuracy and shorter setup times.
Applications: (for alignments with tolerances of .00002 in/ft or 0.0017 mm/m or higher)
•Roll parallelism in paper mills, printing presses and
film lines
•Leveling almost any surface (squares, frames, ways,
flanges, circles, etc.
•Roll forming machines
•High-precision, laser and water-jet cutting machines
•Checking plumb of a vertical surface up to 100 ft.
(30.5 m)
•Measuring surfaces up to 200 ft. (61 m) long with one
setup
•Checking way twist and parallelism between
surfaces
•Circuit board drilling machines
Measuring and aligning:
•The flatness and straightness of almost any surface
(squares, frames, ways, flanges, circles, etc.)
•The flatness and straightness of horizontally and
vertically traversing axes
•The parallelism of vertical or horizontal surfaces, even
if those surfaces are 100 ft. (30.5 m) apart
•The squareness of any two surfaces
•The flatness and straightness of vertical surfaces

5
The L-732 Dual Scan Precision Roll Alignment Laser
Primarily designed for roll alignment and other similar
alignment applications that do not require the exacting
tolerances of the L-742 Ultra-Precision Laser, the L-732
Precision Dual Scan Laser also offers two automatically
rotating laser planes that can be configured at the factory
to have either two vertical planes, or one horizontal and
one vertical laser plane. The L-732 laser planes are flat
and square to 2 arc seconds (.00012 in/ft or 0.01 mm/m).
It comes with a pitch, roll and yaw adjustment base for
setting the laser planes parallel to reference points, 2-
arc-second level vials and a powerful magnet for
maximum stability.
Applications: (for alignments with tolerances of .00015 in/ft or (0.01 mm/m) or greater
•Normal or blown-film lines (roll alignment)
•Rubber (roll alignment)
•Leveling almost any surface (squares, frames, ways,
flanges, circles, etc.
•Laser cutting machines
•Water-jet cutting machines
•Checking plumb of a vertical surface up to 100 ft.
(30.5 m)
•Steel (roll alignment)
•Saw Mills
•Checking way twist and parallelism between
vertical surfaces
•Textiles (roll alignment)
Measuring and aligning:
•The flatness of almost any vertical surface (squares,
frames, ways, flanges, circles, etc.)
•The straightness of horizontally and vertically
traversing axes
•The parallelism of vertical or horizontal surfaces, even
if those surfaces are 100 ft. (30.5 m) apart
•The squareness of any two vertical surfaces
•The flatness and straightness of vertical surfaces
•Measuring surfaces up to 200 ft. (61 m) long with one
setup

6
Laser Controls
Differences in the Lasers
The differences in the four laser models discussed in this manual are as follows:
•Accuracy: the L-743 and L-742 are four times more accurate for flatness and two times more
accurate for squareness than the L-733 and L-732. The L-733 and L-732 have a pitch/roll/yaw base
with medium adjustments and the L-743 and L-742 have a pitch/roll/yaw base with both coarse and
fine adjustments (see Figure 1).
•Number of laser planes: the L-743 and the L-733 have three laser planes and the L-742 and L-732
have two laser planes that can be factory-configured for two vertical planes (wall/wall) or one vertical
and one horizontal plane (wall/ceiling).
When drawings are used to describe a procedure, the laser model will be identified in the caption.
However, the procedures themselves are essentially the same for all four lasers. Appendix A, beginning
on Page 24, provides detailed drawings and specifications for each laser model.
Figure 1 – L-733 Laser (left) and L-743 Laser (right) top and side views