GB/T 20919-2007 formulates specifications for electronic digital display external micrometers. The type and basic size of such micrometers are clarified, and key parameters such as Measurement range and Display resolution are specified. Measurement accuracy, electrical performance, protection function and other mass requirements are strictly defined, and test and inspection rules are explained in detail. Standardize product labels and Encasement content to provide unified standards for the production, testing, sales and use of electronic digital display external micrometers, and help to achieve accurate and convenient outer diameter measurement.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Abolish | ||
|---|---|---|---|
| CCS | J42 | ICS | 17.040.30 |
| Release Date | 2007-04-30 00:00:00 | Implementation Date | 2007-10-01 00:00:00 |