Mirror above tool bench

Can anyone give me possible reasons why you’d put a mirror directly above a tool bench? I just moved into a new home where the previous homeowner left behind his previously installed mirror. For more context, previous homeowner frequently works on farm equipment and occasionally fishing lures.

Can anyone give me possible reasons why you’d put a mirror directly above a tool bench? I just moved into a new home where the previous homeowner left behind his previously installed mirror. For more context, previous homeowner frequently works on farm equipment and occasionally fishing lures.