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| International Standard Category: Musical instruments |
QB 2841-2007 Tuning device of music instrument-estimation of accuracy
乐器音准装置准确度等级判定 ;
| Category No.: | 97.200.20 | Valid Status: | superseded |
| Issued Organization: | NDRC | Issued Date: | 2007-05-29 |
| Implemented Date: | 2007-12-1 | Abolished Date: | |
| Superseded Standard.: | QB/T 2841-2017 Tuning device of musical instruments & estimation of the accuracy class |
Superseded Date: | 2017-7-1 |
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