The key step in making a dimensional measurement using a tool maker's microscope is _____.

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  1. adjusting the focus on the workpiece
  2. changing the objective lens power
  3. aligning the cross-wires with the measurement points
  4. viewing the magnified image

Answer (Detailed Solution Below)

Option 3 : aligning the cross-wires with the measurement points
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Explanation:

Tool Maker's Microscope:

A tool maker's microscope is a precision instrument used for dimensional measurement and inspection of small parts and components. It combines the functionality of a microscope with measurement capabilities, allowing users to accurately measure features on a workpiece.

 

The key step in making a dimensional measurement using a tool maker's microscope involves:

  • Aligning the cross-wires (reticle) precisely with the edges or reference points of the workpiece to ensure accurate measurements.
  • The microscope provides a magnified view, but the critical action is the alignment, as it directly affects measurement precision.

While other steps (focusing, selecting magnification, or viewing the image) are important, alignment of the cross-wires is the most crucial for obtaining correct dimensions.

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