| 对称允许误差标志符号 | 不对称允许误差标志符号 | ||||
| 允许误差(%) | 文字符号 | 允许误差(%) | 文字符号 | 允许误差(%) | 文字符号 |
| ±0.001 | Y | ±0.5 | D | +100 -10 | R |
| ±0.002 | X | ±1 | F | ||
| ±0.005 | E | ±2或02/0 | G | +50 -20 | S |
| ±0.01 | L | ±5 或Ⅰ | J | ||
| ±0.02 | P | ±10或Ⅱ | K | +80 -20 | Z |
| ±0.05 | W | ±20或Ⅲ | M | ||
| ±0.1 | B | ±30 | N | +不规定 -20 | 不标记 |
| ±0.25 | C | ||||
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