Reference

The label on a machine and the sign on the wall share signal words and colours but belong to different standards, with different owners and different replacement duties. This guide contrasts ANSI Z535.4 and Z535.2 point by point, then walks the relabelling of a rebuilt machine whose original label set was lost to paint.

Inspection tagging has drifted into folk practice, and most of the tags on a typical rack satisfy no federal requirement at all. This guide sorts them equipment by equipment into required, evidence of a required inspection, and pure convention, then gives the hard specification that the tags OSHA does compel by name have to meet.