Crane Boom Angle Indicator Decals – Left & Right Pair

These crane boom angle indicator decals replace the printed angle scale used with an existing indicator pointer. Every size includes two decals: one for the left side and one for the right side of the boom. The scales are marked from −10° to 80°.

Choose by radius, not overall width

Measure from the center bolt that holds the indicator arrow to the outside edge of the scale. That distance is the radius used for the size options below, not the decal's overall width or diameter. Compare the scale layout and markings with your existing indicator before ordering.

• 6-inch radius: BA-003
• 8-inch radius: BA-005
• 10-inch radius: BA-006
• 12-inch radius: BA-002
• 14½-inch radius: BA-004
• 16½-inch radius: BA-001

Each selection includes the left-and-right pair in the selected radius. These are adhesive vinyl scale decals, not a complete mechanical or electronic boom angle indicator.

Placement references and installation

Each decal has a light gray 90-degree placement reference line. The blue portion is removable and is intended to be discarded when applying the decal. These features assist positioning; they do not substitute for the equipment manufacturer's alignment and verification procedure.

Match the replacement scale to the existing pointer and mounting arrangement. Follow the crane manufacturer's instructions for installation and checking the indicator before use. Apply to a suitable clean, dry surface without covering other warnings or identification plates.

Check fit before ordering

Select by the required radius, degree markings, and left/right layout rather than crane brand alone. The previous listing recorded customers choosing BA-004 for a National Crane 500C; that is a customer-reported application, not a guarantee for every machine or configuration.

The decals do not determine a permissible load or certify indicator accuracy. Follow the crane's applicable load chart and operating instructions. They do not replace a rated capacity indicator or an anti-two-block system.

Created, printed, cut, and shipped in the USA. Contact us if you need help matching the scale and radius.