What is the formula to find the accuracy of a gage?

• A. Lowest point minus highest point
• B. Determine the class based on diameter
• C. Range span divided by tolerance
• D. Multiply tolerance by test point

Answer: (B)

The correct choice regarding the formula to find the accuracy of a gage is associated with determining the class based on diameter. This approach emphasizes understanding the specifications and classification of gages, which are often defined by their tolerances and accuracy given their size. By determining the class, you can ascertain the expected performance and reliability of the gage in making measurements.

Gages are often categorized into classes that reflect their level of precision and permissible tolerance for measurements. The larger the diameter of a gage, typically, the larger the gage class, which corresponds with how precise and accurate the measurements must be. This classification helps technicians know what level of accuracy can be expected and ensures that the gage is suitable for the measurement task at hand.

The other options do not convey the proper methodology to ascertain the accuracy of a gage. Simply subtracting the lowest point from the highest point doesn't give a clear measure of accuracy since it ignores the context of tolerances. While the range span divided by tolerance might give some insight into the performance of the gage, it doesn't directly establish the accuracy. Multiplying tolerance by a test point doesn’t directly relate to determining class or inherent accuracy. Thus, the emphasis on classification based on diameter aptly relates to understanding and establishing