JIS Grade 1 (B7522) Total length (mm): 3000 Width (mm): 60 Scale surface: vertical numbers 20cm per red and white Scale back: horizontal numbers 20cm per red and white Tape length (m): 3 Tape width (mm): 60 Tape thickness (mm): 0.7 Maximum测量长度(mm):3000 标准张力:50n/20℃