Which one of the following measuring instruments is supposed to be most accurate?
A)Micrometer
B)Vernier dial gauge
C)Optical projector
D)Steel scale
E)Vernier caliper

Question

Quizplus · Accepted Answer

Optical projectors, due to their ability to magnify the object being measured and utilize light for precise measurement, are generally considered to be more accurate than mechanical measuring tools like micrometers, vernier calipers, steel scales, and vernier dial gauges. They can achieve higher levels of precision by reducing human error and improving the visibility of measurement areas.

Which One of the Following Measuring Instruments Is Supposed to Be