Deviation margins of micrometers according to DIN 863
DIN 863 specifies the accuracy of the measurement, or as it is called for outside micrometers, the deviation span of the indication.
In order to ensure that the deviation span of the indication is maintained, it can be checked with gauge blocks of tolerance class 1 according to DIN ISO 3650/DIN 861. Gauge block combinations should be selected which allow the gauge spindle to be checked at points which are an integral multiple of the nominal pitch, as well as points in between. For example, the following gauge block combinations are suitable for this purpose: 2.5 mm, 5.1 mm, 7.7 mm, 10.3 mm, 12.9 mm, 15.0 mm, 17.6 mm, 20.2 mm, 22.8 mm and 25 mm.
DIN 863 is a standard from the Deutsches Institut für Normung e.V. It describes the requirements and accuracies of calipers.
The standard is divided into several parts. Each part covers different aspects of calipers:
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DIN 863-1: This part specifies requirements for calipers with vernier and scale readings, which are mainly used in the workshop. Among other things, it specifies the dimensions, accuracy requirements, test conditions and methods.
- DIN 863-2: This part deals with digital calipers.
- DIN 863-3: This part deals with depth calipers.
This standard guarantees that calipers manufactured in accordance with DIN 863 provide uniform measurements in industry and trade. It helps users to ensure that their calipers meet certain minimum standards and provide accurate and reliable measurements.
It is important to note that standards are constantly reviewed and updated to reflect the latest technological advances and industry standards. Therefore, you should always use the latest edition of the standard.