Mini Square 10x5cm Right angle: 0.1 mm or less per 100 mm Long branch: outer graduation 10 cm inner scale 1 mm pitch 10 cm Short branch: outer scale 5 cm inner scale 1 mm pitch 5 cm Material: Stainless steel Shinwa Rules Co., Ltd. (Shinwa Sokutei) is the leading manufacturer of measuring instruments having the largest share in Japan in the field of metallic scales.