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How many measurement parameters are considered in checking axes accuracy of straightness in CMM?

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How many measurement parameters are considered in checking axes accuracy of straightness in CMM?

(a) 2

(b) 4

(c) 6

(d) 8

I had been asked this question in my homework.

Asked question is from Coordinate Measuring Machines in chapter Machine Tool Metrology of Engineering Metrology

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Best answer
Correct choice is (c) 6

Best explanation: Six measurement parameters need to be considered in the straightness of axes. Straightness of x-axis measured in y and z directions. Straightness of z-axis in x and y directions and of y-axis in x and z directions.

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