The angled arm that is attached to the excavator’s arm and is pinned to the boom. The arm is sometimes called the dipper or stick. A knuckle boom can move right or left in line with the machine, unlike standard booms, which can only move up or down.
Boom
5/5
5 reviews
If you find the same course at a lower price elsewhere, we’ll match it.
Book a course, improve your qualifications, change your life
Pay as little as £20 to reserve your place
