The OT-2020. Portable, Accurate Measurement.

OT-2020 Rotating Laser Target System

The OT-2020 Rotating Laser Target System, in tandem with a rotating laser, provides the fastest, most accurate way to measure flatness, squareness and straightness at distances up to 100 feet.

Battery operated for maximum field portability, the OT-2020 is proven in a wealth of applications - many by Fortune 100 companies.

A compact carrying case (standard) contains the entire system: the Model OT-2020 RS1 Remote Sensor that detects the position of the rotating laser light, the Model OT-2020 CPU Central Processing Unit that provides real-time readout of the measurement value, plus several options for additional flexibility and convenience.

Silicon Position Sensing Detector
Silicon Position Sensing Detector

Exceptional Accuracy. Optimize precision and gain an added measure of confidence. The OT-2020 RS1 Remote Sensor provides conservatively-specified 0.001-inch resolution and accuracy via a leading-edge silicon position-sensing detector.

Fully Portable. Place the RS1 Remote Sensor into the optional OT-2020 BK Bracket Kit, and conveniently make instantaneous measurements anywhere along the laser beam path. Featuring a heavy magnetic base that activates/deactivates at the flip of a switch, the bracket can be firmly - and instantly - secured anywhere on the measurement surface or tool.

Ultra-Simple Operation. Concentrate on your work, not your rotating laser system. The OT-2020's CPU is refreshingly simple to operate. Minimized, straightforward controls enable you to be up-and-running with barely a glance at the instructions. Yet, there is no sacrifice to performance. The CPU provides all key functionality, including pulse averaging, zero offset and a serial communications port.

Industrial Strength. Encased in robust, custom machined aluminum housings, the OT-2020 CPU and RS1 readily withstand the rigors of extreme industrial environments. We've seen systems scratched, dented and covered in grime - yet perform flawlessly after years of continuous service.

Compatible With All Rotating Lasers. The OT-2020 System is plug-and play compatible with all rotating lasers on the market. Four-level autoranging from 0.3mW to 3.0mW and compatibility with all laser tracking speeds from 1 RPM to 1,000 RPM make compatibility instantaneous. Simply plug-in the laser, adjust your targets and begin taking measurements.

Rotating Laser Alignment At A Glance.

How Rotating Laser Alignment Works.

The OT-2020 Rotating Laser Target System measures flatness,
squareness and straightness at distances up to 100 feet.

The principle of rotating laser alignment is simple. A rotating laser, spinning at up to 1,000 rotations per minute, creates a solid plane of light that serves as a measurement reference. While typically leveled to gravity, the rotating laser can be mounted vertically as well as horizontally, or anywhere inbetween.

Next, a rotating-laser target, mounted to the measurement target tool, senses the position of the laser light within 0.001 of an inch each time the laser sweeps by. Multiple targets can be mounted at different points along the laser path.

Lastly, data from the target(s) is fed to a central processing unit which displays the position information in real time. When multiple targets are used, data from all targets is typically fed to a laptop computer for simultaneous display, comparison and analysis.

The OT-2020 Rotating Laser Target System measures flatness, squareness and straightness at distances up to 100 feet.

The Rotating Laser Advantage.

Rotating laser alignment provides significant advantages over manual alignment techniques.

  • Ultra Precise. Eliminates margin of error associated with subjective manual approaches.
  • Real-Time Feedback. Enables user to make on-the-spot alignment adjustments.
  • Faster Measurement. Reduces man hours and facilitates project efficiency.
  • Greater Range. Perform measurements at distances up to 100 feet.
  • Simultaneous Measurement. Enables simultaneous measurement from multiple targets.
  • Data Analysis. Position data can be monitored, stored and analyzed by a computer.

OT-2020 Applications: Flatness, Squareness, Straightness.

  • Machine Tool Alignment
  • Steel Mill Alignment
  • Process Mill Alignment
  • Horizontal Flatness Alignment
  • Turbine Pad Leveling
  • Surface Leveling
  • Roller Alignment
  • Aircraft Assembly
  • Fuselage Alignment
  • Storage Bin Alignment
  • Seat Track Alignment
  • Floor Beam Alignment
  • Body Join Alignment
  1. Enclosure. Measures 6 x 4 x 1.75 inches (H x W x D). Made from durable custom-machined aluminum.
  2. Display. A ± 4 digit LED with 0.8-inch high digits provides easy readout. 7-level programmable brightness (plus off) conserves battery life.
  3. Power. An internal rechargeable NiCAD battery pack provides 4 to 6 hours of continuous use, depending on LED brightness. alternately, the included AC wall charger provides system power while simultaneously recharging the batteries.
    Sleep Mode. Shuts off the CPU after five minutes of continuous inactivity (laser pulse acquisition, key entry, serial port communications) to maximize battery life. All current settings are saved.
  4. Laser Indicator. A red LED flashes whenever the laser strikes the detector.
    Laser Tracking Speed. Automatically detects and accurately processes rotating-laser speeds from 1 RPM to 1000 RPM. The target can be as far 100 feet from the light source without affecting the accuracy of the output signal.
  5. Low Battery Indicator. A yellow LED flashes continuously when batteries are low.
  6. Pulse Averaging. Enables user to adjust the number of laser pulses to be averaged, from 1 to 50.
  7. Zero Offset Adjust. Allows the user to set the zero at any point on the detector other than the mechanical/electrical zero.
  8. Zero Offset Engaged. A yellow LED illuminates continuously when the zero offset adjustment is engaged.
  9. Serial Communications. Collect data and perform calibration tasks via the CPU's RS-232 serial communications port.
  1. Enclosure. Measures 2.75 x 1 x 1 inches (H x W x D). Made from durable custom-machined aluminum.
  2. Capture Height. 1 inch.
    Calibration. The RS1 is electronically centered and calibrated. This information is stored in non-volatile memory so the target can be rotated 180 degrees around the center locating dowel pin to maintain zero. The detector is centered within the enclosure and works both in the horizontal and vertical position.
    Accuracy And Linearity. The accuracy of the beam striking the detector is + 0.001 inches. The linearity of the detector is 0.1%. Overall measurement range is determined by the detector's length minus the laser's beam diameter.
  3. Laser Indicator. A red LED flashes whenever the laser strikes the detector.
  4. Mounting. Two locating dowel pins are provided on the back of the housing. Additionally, tapped mounting holes ensure secure mounting.
  5. Coil Cord. A 12 foot stretched coil cord with strain relief and DB-15 connectors links the RS1 Remote Sensor with the CPU Central Processing Unit.
  1. Heavy Magnetic Base. Firmly secures the bracket kit. An on/off switch activates/deactivates the magnet.
  2. Flexible Adjustment. 22-inch vertical adjustment and 360 degrees tilt enable the user to place the sensor in a wide variety of positions.
  3. Level Indicators. Built-in bubble vials provide adjustment with 0.5 degrees accuracy.

ot2020-gOptional Tooling Sphere Configuration. Working with tooling spheres? Select the optional Model OT-2020 TS1 Tooling Sphere Sensor. It provides identical performance to the RS1 Remote Sensor in a package that fits any standard tooling sphere. Custom configurations are also available.


The OT-5000 RLT Rotating Laser Target is ideal for rotating laser applications requiring simultaneous measurement of multiple targets. Simultaneously measure up to 20 targets in a multi-drop loop; all data is transmitted over RS485 cable for real-time data analysis and readout via simple-yet-sophisticated Windows-based software.

OT-2020 System Specifications

OT-2020 CPU Central Processing Unit

Resolution 0.001 inches

Power Rechargeable NiCad batteries

 500mA/12V DC wall charger

Battery Life 4 to 6 hours, depending on display

 brightness setting

Display LED 4 digit, programmable

 brightness of 8 levels.

 0.8 inches high

Communication RS-232 ASCII format

Operating Temp. 25 degrees to 125 degrees F

Storage Temp. -10 degrees to 149 degrees F

Weight 30 oz.

Dimensions 4 x 6 x 1.75 inches (H x W x D)

Mounting Six 8-32 tapped holes on back

 of CPU housing

OT-2020 RS1 1" Remote Sensor

Repeatability 0.001 inches

Capture Height 1.0 inches

Accuracy 0.001 inches

Linearity 0.1%

Operating Temp. 25 degrees to 125 degrees F

Storage Temp. -10 degrees to 149 degrees F

Weight 9 oz.

Dimensions 2.75 x 1 x 1 inches (H x W x D)

Mounting 2 locating dowel pins. Three

 8-32 tapped holes on back

 of RS1 housing

RS1 Mounting Pattern

RS1 Mounting Pattern

OT-2020 RDT Remote Data Terminal

Display 4 x 20 Supertwist LCD


Communication RS-232

Power 6AA Alkaline

Battery Life 45 hours

Operating Temp. 25 degrees to 125 degrees F

Storage Temp. -10 degrees to 149 degrees F

Weight 20 oz.

Dimensions 7.7" x 4.2" x 1.6" (H x W x D)