Version
The manual system closely resembles the digital one, but locks with a key. Available in 2-rod sections, holds 10-15 frames per rod.
UNLOCKING
Hold piston fully pressed, introduce key in the lock. Turn key clockwise, release gradually the piston until full unlocking is obtained.
LOCKING
Press piston to the maximum of its travel; introduce key and turn a ¼ turn counterclockwise.