What type of tool is a wiggler bar?

A wiggler bar is primarily recognized as an alignment tool. Its main function is to help establish precise alignment in machining processes, particularly in setups where accuracy is crucial. The wiggler bar typically consists of a slender rod with a pointed end and a pivoting arm or pointer, which allows the user to lightly "wiggle" the tool in various directions. This movement enables operators to easily locate or align workpieces with machine features, ensuring they can achieve exact positioning before commencing operations.

While you may find it useful in conjunction with a variety of other equipment or in tool support applications, such as aiding in setting up machinery or parts, its primary function is to facilitate accuracy in alignment rather than merely providing support. Therefore, the answer identifies the wiggler bar's fundamental purpose in the context of tool use in equipment maintenance and machining processes.