BZ Model Column Swing Lever Crane A column mounted jib crane is a type of crane that uses a mounted arm to lift, move and lower material. The arm, mounted either perpendicular to or an acute angle upwards from a column(pillar), may rotate along its central axis through a limited arc or a full circle. A column mounted jib crane is often used in industrial settings, like warehouses, to load and unload material. Please write to me at f*a*i*t*h*@*p*r*o*c*r*a*n*e*.*c*n