Review on 🔎 Discover Accurately with Starrett 827A Finders Diameter Contact by Mike Snedeker

This is the 7th viewfinder I've had to buy (I kinda tend to break them) but this is the best. Under ideal conditions and if I was careful, I was able to capture the edge to within 0.0002 inches, which is the resolution of my digital diffractometer, so it can be even more accurate. And judging by the packaging, they're still made in the USA.