目前市面上还没有按JJF1224-2009《钢筋保护层、楼板厚度测量仪校准规范》要求设计,且带有CMC标志的标准块正式销售。为了完善本地区钢筋保护层测量仪的溯源体系,笔者于2015年6月按照JJF1224-2009的要求,研制成功钢筋保护层测量仪标准块,并经上级计量检定机构溯源校准,满足规范校准方法要 At present, the market has not yet been designed according to JJF1224-2009 Requirements for Calibration of Reinforcing Bar and Floor Thickness Gauge, and the standard block with CMC logo is officially sold. In order to improve the traceability system of reinforcement protection measuring instrument in this area, the author developed the standard block of measuring instrument for protective layer of reinforced steel in June 2015 in accordance with the requirements of JJF1224-2009, and traced the calibration of higher authority verification agencies to meet the standard calibration method