What is ISO 1938-1- Dimensional measuring equipment about?
ISO 1938-1 is a safety standard on Geometrical product specifications (GPS).
ISO 1938-1 specifies the most important metrological and design characteristics of plain limit gauges of linear size. ISO 1938-1 defines the diverse types of plain limit gauges used to verify linear dimensional specifications associated with the linear size.
ISO 1938-1 also defines the design characteristics and the metrological characteristics for these limit gauges as well as the new or wear limits state Maximum Permissible Limits (MPLs) for the new state or wear limits state for these metrological characteristics. In addition, ISO 1938-1 describes the use of limit gauges.
Note: ISO 1938-1 covers linear sizes up to 500 mm.
Who is ISO 1938-1- Dimensional measuring equipment for?
ISO 1938-1 on dimensional measuring equipment is relevant to:
- Metrologists
- Designers of dimensional measuring equipment
- Testing authorities of dimensional testing
- Manufacturers of dimensional measuring equipment
- Manufacturers of measurement tools
- Manufacturers of gauges
Why should you use ISO 1938-1- Dimensional measuring equipment?
ISO 1938-1 is a geometrical product specification (GPS) standard and is to be regarded as to a general GPS standard.
ISO 1938-1 influences chain links E, F, and G of the size chain of standards in the general GPS matrix. The fundamental rules of ISO/GPS given in ISO 8015 apply to ISO 1938-1 and the default decision rules given in ISO 14253‑1 apply to specifications made in accordance with ISO 1938-1 unless otherwise indicated. The terms and concepts used in ISO 1938-1 (compared to the former edition ISO/R 1938:1971) have been changed according to needs and terminology in the other GPS standards. ISO 1938-1 deal with verification, using plain limit gauges, of linear sizes for features of size when the dimensional specifications are required for rigid workpieces.
Overall, ISO 1938-1 is helpful as it assists with the limit gauging that allows the verification of a limit of a specification including dimension, by a physical process without the use of mathematical tools by the user. ISO 1938-1 specifies the most important metrological and design characteristics of plain limit gauges of linear size.
