| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | See Detail | Status | Related Standard |
| JJG 253-1981 | English | 399 |
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Days<=3
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Verification regulation of calibrating attenuator by Д1-2 type attenuation sstandard equipment
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JJG 253-1981
| Obsolete |
JJG 253-1981
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