Variable angle booms have further joint in the midst of the boom to alter the curvature of the boom. These are generally also known as triple-articulated booms (TAB) or three piece booms. A chain trencher is outfitted with a long arm about which is attached a toothed (digging) chain and https://conveyors68887.luwebs.com/26113307/everything-about-trackhoe-for-sale