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← 2.2 Measuring and marking out tools

The centre punch

Metal Technology · Grade 10 · about 40 minutes

A 90-degree punch makes a dent at a hole centre so the drill starts on the mark and does not wander.

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  • 8 sections of explanation, worked examples and diagrams
  • 1 practice task with hints and worked answers
  • A quiz that marks itself as you go
  • Your progress kept across every subject you take
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Other lessons in this sub-strand

  1. Measuring and marking-out tools
  2. Why marking out matters
  3. The steel rule
  4. Using a steel rule accurately
  5. Outside calipers
  6. Inside calipers
  7. The scriber
  8. The try square
  9. Marking and testing square
  10. The dot punch
  11. The centre punch
  12. The divider
  13. The odd-leg caliper
  14. The trammel
  15. The surface table
  16. The scribing block
  17. Vee-block and angle blocks
  18. A marking-out task
  19. Maintaining marking-out tools
  20. Accuracy habits in marking out