Engine General (Supplementary) USCG Question #1008 (Set 18)

The reading on the vernier caliper scale shown in figure "G" in the illustration is __________. GS-0082

USCG Exam Illustration GS-0082
USCG Examination Diagram: Illustration GS-0082
Official USCG Answer & Rule Citation

Correct Answer: Option B — 2.368 inches

Reading a vernier caliper requires adding the main scale value to the vernier scale increment. The main scale indicates 2.3 inches, while the vernier alignment at the 68th mark adds 0.068 inches. Summing these provides the precise measurement of 2.368 inches, essential for accurate marine machinery component fitment.

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