Please study pics as they are part of the description. As shown a Starrett No 359 series with fine adjustment universal vernier protractor, with acute angle attachment, and 12 inch blade. Straight from Harry’s Layout Alley. If your good on a surface grinder you could remove this etching, from my experience it,s less than .005 deep. The 12” blade is free from graffiti. Price reflects this. Thanks for looking. Have a good day.