tT.O . 33K8-4-551-1TECHNICAL MANUALCALIBRATION PROCEDUREFORDIGITAL VOLTMETER3458A(HEWLETT-PACKARD)This publication incorporates Interim Operational Supplement T .O . 33K8-4-551-1S-1dated 27 August 2007.Distribution Statement C - Distribution authorized to U . S . Government agencies and their contractors forofficial use or for administrative or operational purposes only, 7 November 1990 . Requests for thisdocument shall be referred to 562 CBSG/GBHA, 813 Irving-Wick Dr W, Heath, OH 43056-1199.Destruction Notice - For unclassified, limited documents, destroy by any method that will preventdisclosure of the contents or reconstruction of the document.Published under Authority of the Secretary of the Air Force30 JUNE 2007CHANGE 1 - 30 SEPTEMBER 2007