Niigata Seiki SK Made in Japan Silver Curved Shaku Koryu Kaidan Scale Square Thickness 30cm SC-30CKD

Scale width: 15mm Front scale: Longitudinal 1 outside: 30cm2 inside: 30cm (outside standard), Gable 1 outside: 15cm2 inside: 15cm (outside standard) Back scale: Longitudinal 1 outside: Corner 2 inside: Round + Tenon, Gable 1 outside: 15cm2 inside: - Squareness: 0.1mm or less per 100mm (scale side) Length tolerance: 300mm±0.2mm Corner: Corner thickness