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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| JJG 922-2008 |
Verification Regulation of Standard Devices of Vertex Power for Eye Refractometers 验光仪顶焦度标准器检定规程 |
China Metrological
Standards Vertex |
 English PDF |
| JJG 866-2008 |
Verification Regulation of Standard Lenses of Vertex Power 顶焦度标准镜片检定规程 |
China Metrological
Standards Vertex |
English PDF |
| JJG 2090-1994 |
Verification Scheme of Measuring Instrument for Vertex Power 顶焦度计量器具检定系统 |
China Metrological
Standards Vertex |
English PDF |
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