I bought the Enco house-brand gage first and liked it so much that I bought another version (also from Enco) that is much higher quality and holds zero better. The first one is in my portable gun inspection bag (tiny flashlight, tape measure, Enco gage, complete set of snap caps, digital calipers, patches, rags and a bit of oil). The better gage is in a drawer in the shop. I'd like to find one with longer legs, but don't want to spend the money on Mitutoyo or Starrett.