ISO 14253-5:2015标准主要包括以下内容：

1.术语和定义：该部分介绍了与指示测量仪器的验证测试不确定度相关的术语和定义，以便在标准中使用统一的术语和定义。

2.测量不确定度的基本概念：该部分介绍了测量不确定度的基本概念，包括测量误差、测量偏差、测量重复性、测量稳定性等。

3.指示测量仪器的验证测试不确定度的评估方法：该部分介绍了评估指示测量仪器的验证测试不确定度的方法，包括测量不确定度的计算方法、不确定度的组成部分、不确定度的传递方法等。

4.指示测量仪器的验证测试不确定度的实例：该部分给出了指示测量仪器的验证测试不确定度的实例，以便读者更好地理解和应用该标准。

5.报告：该部分介绍了指示测量仪器的验证测试不确定度报告的内容和格式，以便读者编写符合标准要求的报告。

ISO 14253-5:2015标准的应用可以帮助用户评估指示测量仪器的测量结果的可靠性和准确性，从而提高产品质量和生产效率。该标准适用于各种类型的指示测量仪器，包括机械式、电子式、光学式和其他类型的指示测量仪器。

相关标准
ISO 14253-1:1998 Geometrical product specifications (GPS) -- Inspection by measurement of workpieces and measuring equipment -- Part 1: Decision rules for proving conformance or non-conformance with specifications
ISO 14253-2:2011 Geometrical product specifications (GPS) -- Inspection by measurement of workpieces and measuring equipment -- Part 2: Guidance for the estimation of uncertainty in GPS measurement, in calibration of measuring equipment and in product verification
ISO 14253-3:2011 Geometrical product specifications (GPS) -- Inspection by measurement of workpieces and measuring equipment -- Part 3: Guidelines for achieving agreements on measurement uncertainty statements
ISO 14253-4:2010 Geometrical product specifications (GPS) -- Inspection by measurement of workpieces and measuring equipment -- Part 4: Background on functional limits and specification limits in decision rules for verification processes
ISO 14253-6:2017 Geometrical product specifications (GPS) -- Inspection by measurement of workpieces and measuring equipment -- Part 6: Vocabulary