Boom Angle Indicator Selection Guide

One of the most frequent questions we receive from our customers is which Boom Angle Indicator should they choose for their application. Our boom angle indicators come in a left and a right side pictured below. The placement of the “0°” marking on the boom angle indicator is what dictates if a boom angle indicator is a “left” or a “right”.

The 4120BBL Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120BBL is mounted on the left side of the boom arm. It is a black unit with white markings and a white ball.

4120BBL

Left Boom Angle Indicator

The 4120BBR Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120BBR is mounted on the right side of the boom arm. It is a black unit with white markings and a white ball.

4120BBR

Right Boom Angle Indicator

The 2160-B Low-Profile Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 2160-B is mounted on the left side of the boom arm. This is a black unit with white markings.

2160-B

Left Boom Angle Indicator

The 2160-A Low-Profile Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 2160-A is mounted on the right side of the boom arm. This is a black unit with white markings.

2160-A

Right Boom Angle Indicator

Operator Position

The most important factor when deciding which side boom angle indicator you need is the position of the operator relative to the boom arm. The operator of the boom arm can be either on the left side or right side of the boom arm. 

Boom crane facing left, illustrating the correct boom angle indicator installed.

Left

The operator is positioned to the left of the Boom Arm. When the operator is on the left of the boom arm and the boom arm lifts from the front, you would require a left Boom Angle Indicator. When the 0° marking is offset to the left and the boom arm lifts up, the ball rolls to the right giving the operator a visual measurement of the boom arm angle.

Boom Crane facing right, illustrating the correct Boom Angle Indicator installed.

Right

The operator is positioned to the right of the Boom Arm. When the operator is on the right of the boom arm and the boom arm lifts from the front, you would require a right Boom Angle Indicator. When the 0° marking is offset to the right and the boom arm lifts up, the ball rolls to the left giving the operator a visual measurement of the boom arm angle.

Contact Us

If you need more help deciding which side Boom Angle Indicator you need, we would be more than happy to assist you! You can contact us by calling 610-500-2000 or email us at inquiry@riekerinc.com. Alternatively, you can fill out the contact form below and one of our Customer Service Representatives with be happy to assist you.

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The 2160-D Low-Profile Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 2160-D is mounted on the left side of the boom arm. This is a white unit with black markings.

2160-D Low-Profile Boom Angle Indicator

$51.47
The 2160-B Low-Profile Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 2160-B is mounted on the left side of the boom arm. This is a black unit with white markings.

2160-B Low-Profile Boom Angle Indicator

$51.47
The 2160-C Low-Profile Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 2160-C is mounted on the right side of the boom arm. This is a white unit with black markings.

2160-C Low-Profile Boom Angle Indicator

$51.47
The 2160-A Low-Profile Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 2160-A is mounted on the right side of the boom arm. This is a black unit with white markings.

2160-A Low-Profile Boom Angle Indicator

$51.47
The 4120WWL Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120WWL is mounted on the left side of the boom arm. It is a White unit with black markings and a black ball.

4120WWL Boom Angle Indicator

$106.37
The 4120WBL Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120WBL is mounted on the left side of the boom arm. It is a white unit with white numbers on black background with a black ball.

4120WBL Boom Angle Indicator

$106.37
The 4120BBL Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120BBL is mounted on the left side of the boom arm. It is a black unit with white markings and a white ball.

4120BBL Boom Angle Indicator

$106.37
The 4120WWL-12V Backlit Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120WWL-12V is mounted on the left side of the boom arm. It is a black unit with white markings and a white ball. The unit is also backlit for easy operation at night.

4120WWL-12V Backlit Boom Angle Indicator

$130.38
The 4120WWR Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120WWR is mounted on the right side of the boom arm. It is a White unit with black markings and a black ball.

4120WWR Boom Angle Indicator

$106.37
The 4120WBR Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120WBRL is mounted on the right side of the boom arm. It is a white unit with white numbers on black background with a black ball.

4120WBR Boom Angle Indicator

$106.37
The 4120BBR Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120BBR is mounted on the right side of the boom arm. It is a black unit with white markings and a white ball.

4120BBR Boom Angle Indicator

$106.37
The 4120WWR-12V Backlit Boom Angle Indicator is a -30 to 90 degree unit used to measure the angle of a boom for safe operations. The 4120WWL-12V is mounted on the right side of the boom arm. It is a black unit with white markings and a white ball. The unit is also backlit for easy operation at night.

4120WWR-12V Backlit Boom Angle Indicator

$130.38