"The rarely used sizes and 4A0 which follow also belong to this series"DIN 476 also specifies slightly tighter tolerances:* ±1 mm (0.04 in) for dimensions up to 150 mm (5.9 in),* ±1.5 mm (0.06 in) for lengths in the range 150 mm to 600 mm (5.9 to 23.6 in) and* ±2 mm (0.08 in) for any dimension above 600 mm (23.6 in).