Question

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which number shows the part with which depth can be measured?

Explanation:

Step1: Recall Vernier caliper parts

Vernier calipers have different parts for different measurements. The depth - measuring part is a specific component.

Step2: Identify the depth - measuring part

In a vernier caliper, the part used for measuring depth is the probe - like extension. In the given diagram, part 2 is the depth - measuring blade.

Answer:

2