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| Q. |
How many reference gauges are measured for volumetric length measuring accuracy in CMM? |
| A. | 2 |
| B. | 3 |
| C. | 4 |
| D. | 5 |
| Answer» B. 3 | |
| Explanation: it is defined as the difference between the reference length of gauges, oriented freely and the corresponding results from the machine. 3 reference gauges are measured. their lengths corresponding to approx. 1/3, 1/2 and 3/4 of the full travel of the longest axes. | |
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