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Standard Insuued on: 1980-09

JJG 61-1980    Verification Regulation of Square
直角尺检定规程
Category No.:JJ Valid Status:superseded
Issued Organization: Issued Date:1980-09-30
Implemented Date:1981-3-1 Abolished Date:
Superseded Standard.:JJG 7-2004 Verification Regulation of Squares
Superseded Date:2004-9-2
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JJG 61-1980   GB/T 2022-1980   HB/Z 5126-1979  

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