Question

A hole of $25\text{H}_7$ is to be checked. IT7 tolerance = $0.021\text{ mm}$. Hole limits are:

• A. 25.000 -- 25.021 mm
• B. 24.979 -- 25.000 mm
• C. 25.021 -- 25.042 mm
• D. 24.979 -- 25.021 mm

Hint:

Uppercase letters refer to holes, while lowercase letters refer to shafts.
For any 'H' hole, the lower deviation is always $0$, while for any 'h' shaft, the upper deviation is always $0$. This simplifies limits calculations instantly.

Answer 1

The Correct Option is A