L-730W Precision Plumb Laser

L-730 Precision Leveling Laser


Designed primarily for lower-accuracy plumb measurements, the L-730W Precision Plumb Laser has 1 vertical, auto-rotating laser plane that is flat within 2 arc seconds (.00012 in/ft or 0.01 mm/m) in a 360º sweep and 1 arc second in a 90º sweep. It also features 3-arc-second illuminated level vials.

The laser is mounted on an adjustable base with coarse pitch and roll adjustments, so that the laser plane can project the measurement reference out to 100 feet (30.5 m) in radius in all directions. The laser is completely self-contained and can operate on battery or AC power.


  • Measuring and aligning:
    • The flatness and straightness of almost any vertical surface up to 100 feet (30.5 m) (squares, frames, ways, flanges, circles, etc.)
    • Plumbness of almost any surface (squares, frames, ways, flanges, circles, etc.)
    • The flatness and straightness of vertical surfaces
    • The straightness of vertically traversing axes of machine tools
    • The parallelism of vertical surfaces
    • Checking machine tool guideway twist in vertical axes and parallelism between vertical guideways
    • Measuring surfaces up to 200 feet (61 meters) long with 1 setup


  • 1 continuously rotating, vertical laser plane with operational range of 100 feet (30.5 m) in radius.
  • High accuracy:  laser plane flat to 2 arc seconds (.00012 in/ft. or 0.01 mm/M) in 180º sweep and 1 arc second (.00006 in/ft. or 0.005 mm/m) in 90º sweep
  • Includes Pitch/Roll/Yaw adjustment base with coarse adjustments.
  • Standard illuminated levels accurate to 3 arc second (.00018 in/ft. or 0.015 mm/m).
  • Optional L-740SP high-accuracy, split-prism illuminated levels accurate to 1 arc second (.00006 in/ft. or 0.005 mm/m).  Note:  requires laser base L-730CFU upgrade.
  • Uses A-1519-2.4ZB Single-Axis, Wireless Targets – 1.2 in (33 mm) PSD, .00002 in (0.0005 mm) resolution.
  • Wireless targets provide real-time alignment data updating simultaneously.
  • Align and monitor multiple axes simultaneously using up to 99 targets at the same time.
  • Initial setup typically takes 10-20 minutes or less.  Transfer setups take 5-10 minutes.
  • Short warm-up
  • Optional Windows Win7/8/10 software for quickly recording and analyzing machine geometry data
  • Battery or AC powered
  • Laser and targets fit into portable shipping case



Laser: 6.25 lbs (2.83 kg)
Battery Pack: 1 lb (0.45 kg)
L-123 Base: 10 lbs (4.54 kg)


Laser: Aluminum and Stainless Steel
L-123 Base: Aluminum

Laser Type:

Visible diode, 670 nM wavelength Class II (Class I in scanning mode) .160 in (4.06mm) beam diameter

Laser Power:


Beam Stability:

Translation: .0001 in/hr/ºF (.005mm/hr/ºC)
Angular: 0.2 arc sec/hr/ºF (0.36 arcsec/hr/ºC)

Beam Straightness:

.000015 in/ft. (0.001 mm/m) +/- .0001 in per 10 feet (3 m) air noise

Laser Plane Flatness:

2 arc secs:  .00012 in/ft. (0.01 mm/m), +/- .0003 in (0.0075 mm) 360º sweep
1 arc sec:    .00006 in/ft. (0.005 mm/m) +/- .00015 in (0.0038 mm) 90º sweep.

Operating Modes:

 1 laser plane, rotating or stationary.

Operating Range:

Laser plane has a 100-foot (30.5 meters) operating range in radius

Power Supply:

9V DC external battery pack (4 cells) or 115/220V AC adapter

L-123 Base Adj. Range:

+/- 1.5º

L-123 Base Adj. Resolution:

1.7 arcsec (0.01 in. in 100 ft or 0.25 mm in 30.5 m)

Level Vials:

Illuminated and accurate to 3 arc seconds or 0.00018 in/ft. (0.015 mm/m)

Optional Hi-Accuracy Level Vials:

L-740 Split-Prism Upgrade:  accurate to 1 arc second (.00006 in/ft. or 0.005 mm/m).  Requires L-730CFU Coarse-Fine Adjustment Base Upgrade.