A crane scale is a dynamometer / load cell / load links outfitted with equipment appropriate for suspended weighing, such as large openings in upper shackles, with hooks on the bottom and large dials for easy distant viewing.
The inherent efficiency of the crane scale guarantees its continuing popularity. A correctly installed crane scale lets operators accomplish two things at once: allowing them to move materials and gather accurate weight data or inventory information in one step.
The ideal crane scale must be more than accurate. It's going to collide with other equipment and work in all kinds of environments so it has to be easy to read and unquestionably safe for overhead operation.