一、规程修订的背景2013年依据国家质检总局国质检量函(2013)101号文件要求,由天津市计量监督检测科学研究院负责对JJG4-1999《钢卷尺检定规程》(以下简称“旧规程”)进行了修订。2015年8月JJG4-2015《钢卷尺检定规程》(以下简称“新规程”)经国家质检总局批准,自2016年2月24日起实施。由于旧规程使用已经14年,期间计量器具的生产 I. Background of Amendments to Regulations According to the requirements of AQSIQ (2013) No. 101 document issued by the State Administration of Quality Supervision, Inspection and Testing Institute of Science and Technology of Tianjin Municipality in 2013 is responsible for the inspection and approval of JJG4-1999 “Rules for Verification of Steel Tape Rulers” (hereinafter referred to as “ ”Old procedures “) was revised. August 2015 JJG4-2015 ”Steel Tape Test Regulations“ (hereinafter referred to as ”the new procedures ") by the State Administration of Quality Supervision approved since February 24, 2016 come into operation. Since the old procedure has been used for 14 years, the production of measuring instruments has been measured