Manual Rise Arm Barrier - Galvanised and Powder coated Upto 7.0mManual Rise Arm Barrier Galvanised and Powder Coated Upto 7. 0m The Standard Manual Arm Barrier provides a low maintenance, cost effective way of manually controlling access to unauthorised areas on a permanent or temporary basis. Durable and hard working, this manual raise arm barrier has been manufactured for the last 32 years and compromises a robust and high quality pivot post, lockable end rest and aluminium boom. Carefully designed pivot post