GA-94 (not shown) calibrates inches into 1/16ths and measures picas with an additional centering pica scale.
Rulers shown in picture, from top to bottom, are B-90, GA-86, and GA-96. B-90 has pica, inch, and agate calibrations and a beveled edge. GA-94 is not pictured. rule with a variety of data and calibrations on both sides including inches, picas and agate measuring as well as proofreader's symbols, printers' rules, hairline to 12 point, ten percentage screens ranging from ten percent to solid halftone.