7. In line with Exercise in measuring the dimensions of the five-peso coin and the marble; which of the following statements is TRUE regarding the use of measuring instruments such as a ruler, a Vernier caliper, and a micrometer caliper?
Regardless of the scale and resolution, the ruler, the Vernier caliper, and the micrometer caliper are all instruments that can be used to accurately estimate the dimensions of small objects if measured properly by the observer. An ordinary ruler has limited resolution and a higher smaller scale division (SSD) which produces less accurate measurements compared to that of the Vernier caliper and micrometer caliper in measuring the dimensions of small objects.
III. Measurements using the Vernier caliper and micrometer caliper are more accurate compared to an ordinary ruler because the calipers acquire auxiliary scales (VSR and CSR) which can be used to properly estimate the dimensions of smaller objects.
B. II only
C. II and III
D. I and III
E. I, II, and III