Check the listing for details. Shinwa Brass Mini Try Square (4.5cm). Condition: New. Listed at 31.48 USD. Shinwa Brass Mini Try Square (4.5cm), 174007, 4.5cm blade length, Accurate up to 1/10mm (just under 4 thousandths of an inch), Solid brass handle, A hole in the square allows it to be hung on a nail close to a work area or tool and to be protected from knocking., The Shinwa Brass Mini Try Square is made with considerable thought and attention to detail, as with so many Japanese tools. The corner relief is extended where the brass stock meets the stainless steel, so that the measuring surfaces are isolated from the area where the blade is riveted to the stock. Accurate to better than 1/10mm (just a hair under 4 thousandths of an inch), the square may not be as accurate as humanly possible but it is more than adequate for a very wide range of tasks. A hole in the square allows.