What should be paid attention to when using ceramic needle gauge?

Reasonable use of ceramic needle gauge:

1. Check the measuring surface of ceramic needle gauge before using, and no rust is allowed.PI feng, scratch, black spot, etc.The mark of the gauge should be correct and clear. 

2. The function of ceramic needle gauge shall be within the period of periodic verification and shall be accompanied by verification certificate or mark, or other documents sufficient to prove that the needle gauge is qualified. 

3, measurement of the needle gauge standard conditions: temperature for the prefix = st1 ns = "urn: schemas - Microsoft - com: office: smarttags" 20 ° C, load is zero. 

It is difficult to meet this condition in practical use.In order to reduce the measurement error, the needle gauge and the part to be measured under isothermal conditions should be used as little force as possible. It is not allowed to push the needle gauge into the hole or to rotate at the same time. 

4. When measuring, insert or pull out along the axis of the hole and do not tilt;The gauge is inserted into the hole. Do not rotate or shake the gauge. 

5. It is not allowed to detect the unclean workpiece with the needle gauge.

Ceramic needle gauge maintenance:

1. The needle gauge is one of the precision measuring tools, which should be handled and put gently when used and should not be knocked against its working face. 

2. After each use, the needle gauge shall be immediately wiped clean with a clean soft cloth or fine cotton yarn, coated with a thin layer of rust prevention oil, put into a special case, and put in a dry place.

3. The needle gauge shall be subject to periodic verification, and the verification period shall be determined by the measurement department. 

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