观察目镜视场数偏差不应超过正负2%
——《GBT9246-2008 显微镜 目镜》
| 名义 | -2% | +2% |
| 10 | 9.8 | 10.2 |
| 11 | 10.78 | 11.22 |
| 12 | 11.76 | 12.24 |
| 13 | 12.74 | 13.26 |
| 14 | 13.72 | 14.28 |
| 15 | 14.7 | 15.3 |
| 16 | 15.68 | 16.32 |
| 17 | 16.66 | 17.34 |
| 18 | 17.64 | 18.36 |
| 19 | 18.62 | 19.38 |
| 20 | 19.6 | 20.4 |
| 21 | 20.58 | 21.42 |
| 22 | 21.56 | 22.44 |
| 23 | 22.54 | 23.46 |
| 24 | 23.52 | 24.48 |
| 25 | 24.5 | 25.5 |
| 26 | 25.48 | 26.52 |
| 27 | 26.46 | 27.54 |
| 28 | 27.44 | 28.56 |
| 29 | 28.42 | 29.58 |
| 30 | 29.4 | 30.6 |
| 31 | 30.38 | 31.62 |
| 32 | 31.36 | 32.64 |
| 33 | 32.34 | 33.66 |
| 34 | 33.32 | 34.68 |
| 35 | 34.3 | 35.7 |
| 36 | 35.28 | 36.72 |
| 37 | 36.26 | 37.74 |
| 38 | 37.24 | 38.76 |
| 39 | 38.22 | 39.78 |
| 40 | 39.2 | 40.8 |
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