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December 16, 2020

Announcement on Change of Accuracy Indication for Micrometers

Mitutoyo has changed the terms used to express the accuracy of micrometers, tubular inside micrometers, micrometer heads, and three-point internal micrometers as shown below.

1. Description of changes
    Change of indication of accuracy (to support MPE)
    - Applicable models: Micrometers, tubular inside micrometers, micrometer heads, and three-point internal micrometers
    - Reason for change: Changed to indication of accuracy (MPE *1) to conform to the applicable ISO and JIS standards
*1 MPE = Maximum Permissible Error
      - Details of change: Changed indication of accuracy
     
- Accuracy ⇒ Maximum Permissible Error (JMPE)
         - Accuracy ⇒ Maximum Permissible Error (JMPE)
*While the measuring method will not change, tolerance has changed for some models.
              *While the measuring method will not change, tolerance has changed for some models.
              - Deleted the expression, “Excluding quantizing error of ±1 count” (digital models only)
     
2. Timing of change: From those shipped from the factory in July 2020 (change to be reflected
    starting with English version of General Catalog No. E2020)  
    *Indication of accuracy has changed for products to which inspection certificate is attached.
 
3. Timing of change by inspection/calibration departments
    From the received order in July 2021, the inspection certificate is issued with the above accuracy description.
    (Updated on June 28, 2021)

 

Rev_Accuracy Indication of Micrometers_Eng-1.pdf