Jib (crane)
Horizontal or near-horizontal beam used in many types of crane to support the load
From Wikipedia, the free encyclopedia
A jib or jib arm is the horizontal or near-horizontal beam used in many types of crane to support the load clear of the main support.[1][2] An archaic spelling is gib.[3]

Usually jib arms are attached to a vertical mast or tower or sometimes to an inclined boom. In other jib-less designs such as derricks, the load is hung directly from a boom which is often anomalously called a jib.
A camera jib or jib arm in cinematography is a small crane that holds nothing but the camera.[4]
Jib cranes
A jib crane is a crane that employs a horizontal jib or jib arm attached to a vertical support structure. Common configurations include pillar-mounted and wall-mounted jib cranes. Such cranes are widely used for localized material handling in manufacturing facilities, warehouses, workshops, and maintenance operations.[5]