How to choose the appropriate measuring block for calibration?

1. Select the accuracy level of the measuring block according to the measurement accuracy requirements

Accuracy level of measuring blocks（KLevel0Level1Level2Level3Level needs to match the measurement requirements:

‌Klevel‌High precision, used for calibrating high-precision instruments (such as laser interferometers) or as a length reference for transmission.

‌0level‌Suitable for high-precision measurement in laboratories (such as calibration of precision calipers and micrometers).

‌1level/2level‌Meet general precision measurement requirements, such as workshop part size inspection.

‌3level‌Used for low precision scenarios (such as teaching experiments).

2. Select the combination of measuring blocks based on the measurement size range

Try to combine target sizes with the minimum number of measurement blocks to reduce cumulative errors. For example,35.685mmCan be combined into30mm+5mm+0.6mm+0.08mm+0.005mm.

Complete set of measuring blocks (such as91Block group83Block group is suitable for complex size requirements.

3. Select materials based on the measurement environment

‌temperature effect‌When the temperature is high or the temperature difference is large, choose materials with low thermal expansion coefficient (such as special alloys).

‌Corrosion resistance requirements‌Chemical or marine environments require stainless steel or surface treated measuring blocks.

‌wear resistance‌Ceramic measuring blocks (zirconia) have wear resistance and are made of steel10Double, suitable for long-term use.

4. Measurement block shape and stability

‌Rectangular measuring block‌Fixed thickness9mmEasy to combine multiple sizes.

‌Square measuring block‌Featuring a central hole design, stability is enhanced through connecting rods.

5. Key points of research and cooperation operation

‌step‌Clean the measuring block → Drip a small amount of grease → Cross rotate and grind → Check for interference fringes.

‌avoid problems‌Dirt, surface damage, excessive oil film, or insufficient force can lead to failure of the joint.

6. Economy and Special Needs

Limited budget, can be considered200A cost-effective metric block gauge set around yuan.

Special sizes or shapes can be customized, such as ceramic measuring blocks (wear-resistant, corrosion-resistant).

How to choose the appropriate measuring block for calibration?