Many have combination squares, they are usually second hand or heirlooms that have been passed down in the family. In many instances the rules are corroded and treatments to removed the rust leave them shiny and more difficult to read. Sterling Tool Works is now offering Premium replacement rules that are precision made in the USA. The rules are chemically etched, etchings blackened, tempered and satin chrome plated for excellent resolution that is easy on the eyes.
A 24" rule can be extremely useful for larger tasks in the shop,. Give your vintage Combination Square an upgrade with a new rule! Available in 4R graduations; 64th, 32nd, 16th and 8th.
Thickness = Sterling Rules are .088" Thick
Width Edge to Groove = .46"
Groove width = .093"