This very attractive stainless steel try square made by Shinwa is a good value for a standard precision square. The scale length is 150 mm and has an angular accuracy of less than 0.1mm error per 100 mm length, which is basically the same the 0.001" per inch accuracy for standard engineering squares.
The handle is 100 mm long and features engraved Japanese motifs.
Made in China in a Shinwa Japan owned factory.