What are your organization's espoused values around quality? What artifacts exist that show them at work?
Both the charts and the devices testified to the espoused values of the business. You could ask the person working near any of them and hear the story behind it. Many of the charts started at a dismally low level of quality. Good poka yoke solutions usually come from out-of-the-box thinking, which means that many of the ideas will fail. Neither the charts nor the devices would be created in a culture of fear.
Mission statements are hard. I've seen too many longwinded meetings where the product was a random mixture of words on a plaque that got dusted once/yr. So, great care is needed.