Guys, another question for the experts. My Starretts or B&S of Lufkin are generally of the vintage type, imperfect, with rule stains, darkening, etc. I don't have any new really. Some are really hard to actually read the measurements off the scales. What are the best ways to clean up and then protect these tools and make usable again. Could either try to make the scales light color again by sanding a bit, then darkening just the cross lines to see them? Or the alternate, leave the scales dark color, but lighten just the marking lines to read? School me! A few of mine have a touch of rust to them also. Generally, I clean up tools in purple power first, then run through some deruster, but that leaves them darker than ever. What do the experts do? - Paul