Product Details

A1BR30 Break-Off Survey Monument

• The first magnetic break-off monument introduced by Berntsen
• Designed to be used in areas where surface disturbance is likely
• Elongated base is designed to break at a predetermined point
• Magnetic remnant is left at the original location after impact, even if the entire pipe & cap portion of the monument is pulled from the ground
• Prevents complete loss of the original survey point
• 3¼" (83mm) diameter 6000 series aluminum survey cap*
• 2" (50mm) diameter ID aluminum pipe
• Cast aluminum break-off base *
• Cap and base are held to the pipe with aluminum rivets

* Permanent ceramic magnets located in the cap and below the break-off point in the base



A1BR30 Survey Monument Installation Instructions