1065.395—Inertial PM balance verifications.
         This section describes how to verify the performance of an inertial PM balance.
    
    
        
        (a) Independent verification.
         Have the balance manufacturer (or a representative approved by the balance manufacturer) verify the inertial balance performance within 370 days before testing.
    
    
        
        (b) Other verifications.
         Perform other verifications using good engineering judgment and instrument manufacturer recommendations.