JJF（冀）151-2018
石油专用丁字尺校准规范
Calibration Specification for Oil Special T-squares
2018-11-30 实施
2018-08-28 发布
目 录
引言........................... 1
1范围.......................................1
2 概述..................................................1
3计量特性.......................................2
3.1刻线宽度及宽度差..................................2
3.2刻线面的平面度 ............................................2
3.3主尺侧面和横尺工作面的直线度...........................2
3.4直角误差.....................................................2
3.5示值误差...............................................2
4 校准条件.............................................................2
4.1环境条件...............................................2
4.2校准项目和校准用设备..........................3
5 校准方法..............................................................3
5.1刻线宽度及宽度差.......................................................3
5.2刻线面的平面度....................................................3
5.3主尺侧面和横尺工作面的直线度 .......................................3
5.4直角误差................................................4
5.5示值误差...............................................4
6 校准结果的表述..................................................4
7 复校时间间隔.................................4
附录A石油专用丁字尺示值误差的测量不确定度评定 ................5
附录B 石油专用丁字尺直角误差的测量不确定度评定..........................8
附录C 校准证书内容 ..............................................10