????ISO?????????????ISO????????????2?η??????????(1??1.4142)????????????????????????????????????????С?????????????
????ISO 216????????????(ISO)??????????????????????????????????????????á??????A4????繳??????????塣
????ISO 216????A??B??C??????е?????硣C???????????????????
????ISO 216???????1:√2?????;??????????????????????????????????????????????￡????磺??????A4?????С???????A4???;?????A4????????????A3???;???????A4??????????A4???????????t??????????????
????A???
????A???????????????? 1 : √2 ??????????????????????A0????????????????????? 1 : √2 ??????????????A1??A2??A3……??????磬?????????????????????????????????????????????￡????????????????????????????????????????????????????????????????????????????? √2 ??
????B???
????B????????????????????????A????????????????????????B1??A1??A0????????????????C?????????????????A??B???????????????
????C???
????C??????????????????????A4??С?????????÷?????C4??С?????;??A4???????A5??????????÷??C5??С?????????????
????A??B??C??е???
| A??? | B??? | C??? | ||||
|---|---|---|---|---|---|---|
| ??? | ???? | ??? | ???? | ??? | ???? | ??? |
| 0 | 841×1189 | 33.1×46.8 | 1000×1414 | 39.4×55.7 | 917×1297 | 36.1×51.1 |
| 1 | 594×841 | 23.4×33.1 | 707×1000 | 27.8×39.4 | 648×917 | 25.5×36.1 |
| 2 | 420×594 | 16.5×23.4 | 500×707 | 19.7×27.8 | 458×648 | 18.0×25.5 |
| 3 | 297×420 | 11.7×16.5 | 353×500 | 13.9×19.7 | 324×458 | 12.8×18.0 |
| 4 | 210×297 | 8.3×11.7 | 250×353 | 9.8×13.9 | 229×324 | 9.0×12.8 |
| 5 | 148×210 | 5.8×8.3 | 176×250 | 6.9×9.8 | 162×229 | 6.4×9.0 |
| 6 | 105×148 | 4.1×5.8 | 125×176 | 4.9×6.9 | 114×162 | 4.5×6.4 |
| 7 | 74×105 | 2.9×4.1 | 88×125 | 3.5×4.9 | 81×114 | 3.2×4.5 |
| 8 | 52×74 | 2.0×2.9 | 62×88 | 2.4×3.5 | 57×81 | 2.2×3.2 |
| 9 | 37×52 | 1.5×2.0 | 44×62 | 1.7×2.4 | 40×57 | 1.6×2.2 |
| 10 | 26×37 | 1.0×1.5 | 31×44 | 1.2×1.7 | 28×40 | 1.1×1.6 |
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