Set of required standard or special tools needed to produce a particular part; includes jigs, fixtures, gages and cutting tools, but excluding machined tools.
It refers to a set of special tools required to produce a particular part. It includes jigs, fixtures, gages and cutting tools but not machined tools.
Usually modular systems that use clips, bolts and special accessories to accurately and immovably attach a tool (e.g. electrode) or workpiece to a machine tool (e.g. electric discharge machining or milling machine) in the required position.