A component is specified as 25 mm ± 1.6 mm. What is the minimum acceptable width?

A component is specified as 25 mm ± 1.6 mm. What is the minimum acceptable width?

• A. 23.4 mm
• B. 25.0 mm
• C. 26.6 mm
• D. 24.0 mm

Answer: (A)

Tolerance defines how much a dimension can vary from its nominal size. The smallest acceptable size is found by subtracting the tolerance from the nominal value. Here, 25 mm with a ±1.6 mm tolerance means the width can range from 25 − 1.6 = 23.4 mm up to 25 + 1.6 = 26.6 mm. Therefore, the minimum acceptable width is 23.4 mm. Any measurement below that would be out of tolerance.

Tolerance defines how much a dimension can vary from its nominal size. The smallest acceptable size is found by subtracting the tolerance from the nominal value. Here, 25 mm with a ±1.6 mm tolerance means the width can range from 25 − 1.6 = 23.4 mm up to 25 + 1.6 = 26.6 mm. Therefore, the minimum acceptable width is 23.4 mm. Any measurement below that would be out of tolerance.