Nikon F5 Focusing Screen Type E $400 Like New Condition
Matte/Fresnel screen features central AF brackets and a 5mm spot metering and 12mm center-weighted metering reference circles, with etched horizontal and vertical grid lines. For architectural and other precision photography.
https://www.bhphotovideo.com/c/product/122459-REG/Nikon_2586_Focusing_Screen_E_for.html
Nikon F4 Focusing Screen Type E $300 Like New Condition
Matte/Fresnel field with 5mm diameter and 12mm-diameter reference circles and AF brackets, and etched horizontal and vertical lines.
makes it ideal for architectural photography
http://www.mir.com.my/rb/photography/hardwares/classics/nikonf4/screens/index.htm