• Dimensions: 14″ x 6.375″ x 1.75″
  • Degree Range: -30° to 90°
  • Degree Markings: 5° increments
  • Case Material: 100% Polycarbonate
  • Operating Temperature: -45°C to 82°C
  • IP Rating: IP68


  • Dimensions: 9.25″ x 4.5″ x 0.5″
  • Degree Range: Customizable
  • Degree Markings: 5° Increments
  • Case Material: 100% Polycarbonate
  • Operating Temperature: -45°C to 82°C
  • IP Rating: IP68


    PN: RDSR3-BA-09

  • Dimensions:

LCD Display Box: 4.54″ x 3.54″ x 2.27″

Remote Sensor Box: 5.89″ x 3.75″ x 2.33″

  • Degree Range: -10° to 90°
  • Display Resolution: 0.1°
  • Case Material: Die-Cast Aluminum
  • Operating Temperature:

LCD Display Box: -20°C to 70°C

Remote Sensor Box: -40°C to 85°C

  • IP Rating:

LCD Display Box: IP54

Remote Sensor Box: IP67

4120 Boom Angle Indicators Specifications

Rieker’s 4120 mechanical boom angle indicators are all-weather and will not rust, freeze, or otherwise “hang-up” like old-fashioned metal pendulum styles. Like all of our instruments, each indicator is properly dampened for smooth and reliable readings.

2160 Low-Profile Boom Angle Indicators Specifications

Rieker’s 2160 Low-Profile Boom Angle Indicators are rugged, all-weather boom angle indicators perfect for those tight spots and harsh environments. Custom configurations available, including adding an upper scale, color warning zones, and backlit housing. Please give us a call and your sales representative will be happy to assist.

RDSR3-BA-09 Electronic Boom Angle Indicator


Rieker’s Digital Boom Angle Indicator Remote Inclinometer Package (model RDSR3-BA-09) is an extension of the RDI series of digital inclinometers.

Like the 4120, our electronic boom angle indicator is sealed in a rugged case that protects the sensor components from harsh environments. The RDSR3 is supplied as a calibrated set featuring an environmentally sealed measurement sensor package and a separate LCD display box (connected by an interface available in various lengths). All of the standard RDI features have been incorporated into this remote sensing package, modified specifically to comply with OSHA and other safety regulatory agencies specifications for Boom Angle Indicators.

WARNING: This product’s interiors contain leaded solder on the PCB and can expose you to Lead and Lead Compounds, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov or visit our Prop 65 Page.

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