Your part drawing may be wrong...

But here is the standard you need to use.

Avoid confusion and errors in production by mastering Geometric Dimensioning and Tolerancing (GD&T).

Unlike traditional methods, GD&T offers precise communication through symbols, enhances accuracy in form and location, optimizes tolerances for cost savings, eliminates stack tolerance issues, simplifies inspections, and promotes Design for Manufacturing (DFM).

Upgrade to GD&T for more accurate and efficient technical drawings.

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