Micrometer Scale Division Calculation

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The discussion centers on calculating the smallest possible reading for a micrometer scale with specific divisions. The user proposes a least count calculation of .02 divided by 20, resulting in 1/1000 mm, but questions its accuracy. Participants suggest that the answer should be expressed in inches and request clarification on the origin of the numbers used in the calculation. Overall, the conversation emphasizes the need for precise unit conversion and verification of the calculation method. The accuracy of the least count calculation remains uncertain.
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Homework Statement


in micrometer, there are 30 smallest divisions on the main scale per inch. One complete turn of the revolving scale that has 20 divisions makes one smallest division on the main scale. What is the smallest possible reading that can be obtained?

this is how i solved it. I am not sure if it's correct.

least count = .02 / 20 = 1 / 1000 mm

is this correct?
 
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tsi poera said:

Homework Statement


in micrometer, there are 30 smallest divisions on the main scale per inch. One complete turn of the revolving scale that has 20 divisions makes one smallest division on the main scale. What is the smallest possible reading that can be obtained?

this is how i solved it. I am not sure if it's correct.

least count = .02 / 20 = 1 / 1000 mm

is this correct?

Welcome to the PF.

The answer should probably be in inches, no?

And where did you get the numbers in your calculation? Can you explain your approach to solving this problem?
 

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