[Blue Flame Restorations]

What it is, is work instructions for Mercruiser's Quality Matrix. Each work station would have one. Typical Lean Manufacturing principles as used presently, even though it was most likely called Total Quality Principles or ISO or QS back in the day.

This was something that GM would have required if Mercruiser didn't already do it on their own at the time.

This was the norm at GM when I worked for them.