Micrometer caliper

• William Gascoigne


  Invented micrometer caliper
• Micrometer caliper

  • Precise linear measurement of dimensions
  • C-shaped frame
• Frame

  • Holds the anvil and barrel
  • Heavy and high thermal mass frame
• Ratchet Speeder

  • Limits applied pressure by slipping at a calibrated torque
• Anvil

  • Shiny part of the spindlen that moves toward
  • The sample rests against
• Spindle

  • Causes the thimble to move toward the anvil
• Locknut


  Can tighten to hold the spindle stationary
• Index line


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• Sleeve Scale


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• Ratchet Speeder


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• Thimble


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• Thimble Scale


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• Lock nut


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• Frame


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• Measuring faces


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• Spindle


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• Anvil


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