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Digital caliper

Measure actual panel thickness and check the diameter of hardware.

By GrainBench · Reviewed October 22, 2026

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When it earns a place in your kit

Especially useful for plywood joints, shelf-pin studs and drill-depth checks. The displayed decimal places do not establish the instrument’s accuracy.

What to check before choosing

  • Look for outside jaws, a depth rod and clear inch/mm switching.
  • Check the stated accuracy and measuring range, not just the resolution of the display.

A practical setup sequence

  1. Clean the measuring faces and verify the zero with the jaws gently closed, following the instrument instructions.

  2. Keep the jaws square to the part and use light, consistent contact. Repeat at several sound places on the sheet.

  3. Record the unit with the result. Measure the pin’s insertion stud, not its wider shelf-bearing platform.

A common mistake to avoid

Tilting the jaws or squeezing soft material hard can change the reading.

Sources and scope

References checked October 22, 2026. Named-product instructions illustrate the category and do not establish compatibility with every tool. Use the exact model’s instructions for capacity, settings, guarding and protection. No independent product testing or load rating is claimed.

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