For 6 Inch Brass and Rosewood Try Square Wood Woodworking Tri Trysquare 6" Rosewood Try Square. Quality 6-Inch Try Square with rosewood handle is made with hardened, tempered, and blued steel blade. Fitted with brass, this tool is an accurate, attractive, traditional Sheffield product. Try squares are primarily used to measure the accuracy of a right angle. Features: Exceptional quality tools from Crown Hand Tools Ltd, Sheffield, England Great for measuring right angles Tri Square