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1
what dimensions can be measured accurately, using a vernier caliper?
circumference.
external dimension.
depth dimension.
internal dimension.
ok

Explanation:

Step1: Recall vernier caliper functions

Vernier calipers can measure internal dimensions (using the upper jaws), external dimensions (using the lower jaws), and depth dimensions (using the depth rod).

Step2: Analyze circumference measurement

Circumference is not directly measured by a vernier caliper. It is calculated from diameter (if diameter is measured by caliper, then \(C = \pi d\)). But the question asks for dimensions measured accurately (direct measurement), not calculated.

Answer:

Internal dimension, Depth dimension, External dimension.