4 3/4 x 4 3/4" Ground Glass Focus screen for 4x5 SLR RB Graflex TOP FOCUS Screen

Description

This is a top focus screen to fit 4x5 RB slr Graflex cameras. Screen is 4.75 x 4.75 inches (photo shows a stock image of 4x5 glass). Screens are fairly easy to install and it is highly recommended to do this job to any old stock 4x5 slr to check and make sure the upper focus screen matches the film plane exactly. After decades many of these cameras are a bit off so replacing the screen is a good idea. You simply make sure the film plane focus matches the top viewfinder.
This glass is ground from German Schott optical glass and is approx 1.2 mm thick. Most gg is much thicker these days and isn't made from glass of this quality. Thicker glass isn't as clear as this. I use this glass in all my cameras it's also very light weight.
I have been making gg for a decade or longer.  Hand ground glass is the best to use much finer and brighter than acid etched glass sold by other vendors. Please compare them it is no contest. I also take the sharp edges off the glass, thank you for your support.