Question 509General Subjects - Assistant Engineer
70% to passTo get an accurate measurement using a 12 inch machinist's steel rule, you should measure _______________.
Aon the unmarked edge of the rule
Bon the narrow edge of the rule
Cfrom the zero end on the scale
Dfrom the one inch graduation mark
AI Explanation
The correct answer is D) from the one inch graduation mark. To get an accurate measurement using a 12 inch machinist's steel rule, you should measure from the one inch graduation mark, not the zero end of the scale. This is because the zero end of the rule is not always perfectly aligned, and measuring from the one inch mark ensures you are getting an accurate 12 inch measurement. The other options are incorrect because: A) the unmarked edge may not be precisely calibrated, B) measuring on the narrow edge would not provide the full 12 inch length, and C) measuring from the zero end could introduce inaccuracies.
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