Focuingscreens has several different types of screens available for Pentax cameras. I currently have two different ones,the first one pictured here is the K3 screen. Many Katz-Eye users will recognize this as similar to their screen. To be honest, the Katz Eye is custom made based on the Nikon K3 screen, FocusingScreens K3 is a cut down Nikon K3 screen.
Out of focus. Note that the circle around the center split image/microprism is rather large. Since this is a full frame focusing screen the center rings are especially large.
In focus:
Also note that this screen has engraved "Rule of Third" guides. This is where the FocusingScreens comes in a bit cheaper than other high end screens. they only charge a few dollars more for an engraved screen.