MODEL 401
METRIC AND ENGLISH
FRONT SIDE : Top edge 1/2 mm, mm. Bottom edge 1/16ths, 1/32nds, 1/64ths.
REVERSE SIDE :Conversion Table inches to mm
| Model No. | Length | Width | Thickness |
| 401 A 5 | 150mm/6 in | 15mm | 0.5mm |
| 401 C 8 | 300mm/12 in | 25mm | 0.8mm |
| 401 C 10 | 300mm/12 in | 25mm | 1.0mm |
| 401 E 10 | 600mm/24 in | 30mm | 1.0mm |
| 401 F 12 | 1000mm/36 in | 35mm | 1.2mm |
| 401 G 12 | 1200mm/48 in | 35mm | 1.2mm |
| 401 J 20 | 2000mm/79 in | 35mm | 2.0mm |
| 401 K 20 | 3000mm/118 in | 35mm | 2.0mm |