For the lazy at heart, you can always go to someone like Bill Maxwell and get a fancy one made. He will add grid lines or split focus, whatever you ask. Helluva good guy, too. He made me a nifty HI-LUX one for my Autocord. But I appreciate the article and think the end result looks pretty damn neat. Definitely appreciate the DIY spirit. (I did do my own DIY when it came to replacing the mirror. Ordered the proper product from Edmund optics, cut it down and installed it into the Minolta. End result + the Maxwell screen = about a million times better focusing ability than the original.)