Technician A says dial indicators can measure warpage. Technician B says dial calipers only measure length. Which technician is correct?

To evaluate the claims made by Technician A and Technician B, we need to analyze the function and purpose of both dial indicators and dial calipers.

Technician A's Claim

1. Dial Indicators: These are precision measuring instruments used to measure small distances or deviations in physical dimensions. They are particularly useful for measuring warpage, which refers to the deformation or bending of a flat surface. The dial indicator can detect variations in the height of a surface compared to a reference point, making it suitable for assessing warpage accurately.

Technician B's Claim

2. Dial Calipers: Dial calipers are tools used primarily for measuring lengths, widths, depths, and internal and external dimensions. While they can measure dimensions in a straightforward way, they are not designed to measure warpage directly.

Conclusion

• Technician A is correct in stating that dial indicators can measure warpage.
• Technician B’s claim that dial calipers only measure length is partially correct; however, they can also measure other dimensions like depth and internal/external sizes, but not specifically warpage.

In summary, Technician A is correct, while Technician B's statement is not entirely accurate since dial calipers have broader capabilities than just measuring length.