Question

The thread characteristics can be measured precisely by the following instrument:

• A. Screw pitch gauge
• B. Tool room microscope
• C. Thread gauge
• D. Slip gauge

Hint:

For high-precision thread measurement, a tool room microscope provides the most accurate results, especially for complex thread profiles.

Answer 1

The Correct Option is B

Step 1: Understanding thread measurement.
Thread gauges are typically used for the measurement of thread size and pitch, but for precise measurement of the thread characteristics (such as thread profile, pitch, and geometry), a tool room microscope is the most effective instrument.
Step 2: Why tool room microscope.
A tool room microscope allows for high-precision measurements and can be used to examine the detailed geometry of threads, including pitch, lead, and profile. It is capable of providing the accuracy required for high-precision threads.