Designed to eliminate parallax errors and used with standard 0.5mm lead mechanical pencils, these rules are perforated with slots or holes just slightly larger than 0.5mm at standard increments. Etched from 0.008" thick stainless steel, they are very flexible.
This T-rule is particularly convenient for layout work. It is perforated in 1/64" increments as well as 32nds and 16ths. Non-glare finish.
Made in USA.