College

When a precision straight edge is used to measure cylinder block deck wear, which of the following must be used to make a precise measurement?

A. Depth gauge
B. Dial bore gauge
C. Dial indicator
D. Thickness gauges

Answer :

Final answer:

To measure cylinder block deck wear accurately using a precision straight edge, a dial indicator is essential. It provides direct readings of surface deviations, ensuring precise measurements of wear. Other tools such as depth gauges or thickness gauges are not suited for this specific task.


Explanation:

Measuring Cylinder Block Deck Wear

When measuring cylinder block deck wear with a precision straight edge, a dial indicator must be used to make precise measurements. The dial indicator allows for accurate readings of any deviations in the deck surface, which is essential in assessing wear. It provides a direct visual reading of even the smallest variances and facilitates determining if the deck surface is within the specified tolerances.

Other tools mentioned play different roles in measurement:

  • A depth gauge measures how deep a hole is but doesn't give flatness or wear measurements.
  • A dial bore gauge is more suited for checking the diameter of cylinders rather than the flatness of surfaces.
  • Thickness gauges can help measure material thickness in isolation but are not effective at ensuring the surface is even.

For the most effective and precise determination of cylinder block deck wear, the dial indicator is the preferred choice.


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