Mitutoyo Correct Usage Series

Proper Use of Gage Blocks: The Wringing Method

If you don’t have the exact size gage block you need, you can create it by wringing together multiple blocks. However, improper wringing can introduce gaps and lead to inaccurate measurements. Watch the video below to learn Mitutoyo’s recommended method for correctly wringing gage blocks to ensure precision and reliability.

Preparation: Key Points

• Selecting the gage blocks to be combined.
  　・Select the smallest number of blocks possible.
  　・Use the thickest gage blocks available for better stability.
  　・Choose combinations based on the last digit of the desired dimension.
• Preparing the measuring surface.
  　・Ensure the surfaces are free of burrs or damage.
  　・Apply a small amount of oil to the measuring surface.
• Allow blocks to stabilize at room temperature before use for optimal accuracy.

Preparation: Video

Wringing Thick Gage Blocks: Key Points

• After thoroughly cleaning the measuring surfaces, apply a small amount of oil.
• Cross the gage blocks at an angle, then rotate them gently to adhere (wring) them together properly.

Wringing Thick Gage Blocks: Video

Wringing Thick and Thin Gage Blocks: Key Points

• After thoroughly cleaning the measuring surfaces, apply a small amount of oil.
• Slide the thin gage block in from the edge of the thick block to create proper adhesion.

Wringing Thick and Thin Gage Blocks: Video

Wringing Thin Gage Blocks: Key Points

• After thoroughly cleaning the measuring surfaces, apply a small amount of oil.
• Use a thick gage block to assist with wringing—slide the thin block from the edge to create adhesion
• Once adhesion is confirmed, remove the thin gage block from the thick block

Wringing Thin Gage Blocks: Video

Reference

Temperature stabilization is critical when using gage blocks. The figure below illustrates how a 100 mm steel gage block can experience dimensional changes when handled with bare hands. To prevent inaccuracies caused by body heat, always wear gloves and avoid direct contact with the gage block.

Note: Ceramic Gage Blocks offer greater resistance to thermal expansion due to low thermal conductivity, making them less susceptible to dimensional changes from handling.

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This convenient set includes all necessary maintenance tools for daily care and storage of gage blocks, including ringing and removal. Supplied in a fitted wooden case for portable use