Elevator Mechanic Practice Exam

You have to measure the outside of a pipe. What tool would you use?

1. Caliper Rule

2. Micrometer

3. Ruler

4. Tape Measure

The correct answer is: Caliper Rule

Measuring the outside of a pipe accurately requires a tool that can provide precise measurements, particularly for round objects. The caliper rule is designed for measuring external dimensions and can adequately accommodate the circular shape of a pipe. While a micrometer is also a precise measuring tool, it is typically used for smaller dimensions and may not be practical for larger pipe diameters. A ruler could serve the purpose for general measurements, but it lacks the precision needed for accurate outside diameter measurements of pipes. A tape measure could be useful for larger pipes and distances but does not offer the same level of accuracy as a caliper when it comes to measuring the outside diameter of pipes specifically. Choosing the caliper rule allows for both precision and convenience in measuring the outside dimensions of pipes effectively.