How to weather-seal a photo print?

[f350ca]

I made a remote current control for a Miller welder, must be 30 years ago. Was before photo shop and printers were popular. I took the face plate off the welder and photo copied the section that had the current control then trimmed away what I didn't need and laminated it. Think I just trimmed the laminate to the size I wanted with no edges, still looks good but it lives in the shop now.