A professional who straightens metal workpieces to blueprint specifications, using handtools and knowledge of metal properties. Responsibilities include:

• Rolls workpiece on flat surface or mounts and rotates it between centres to ascertain irregularities visually or with dial indicator.
• Positions workpiece on surface plate or anvil and hammers workpiece at points of irregularity to straighten it.
• Hammers mandrel through cylindrical objects, such as pipes or tubing to remove dents or kinks.
• Measures straightened workpiece for conformance with specifications, using straightedge, micrometers, and calipers.
• May straighten workpiece in straightening press.
• May heat workpiece in furnace or with heating torch to straighten it.
• May be designated according to parts straightened as tool straightener; gun parts straightener.