Tolerances in Engineering Drawings

Front

What type of tolerance uses a table on the drawing and is based on number of decimal places?

Back

General

Front

What type of tolerance allows equal variation, both larger and smaller, than the specified dimension?

Back

Bilateral

Front

What type of tolerance states both the upper limit and lower limit, without needing to calculate them?

Back

Limit dimensions

Front

What type of tolerance is assumed when none is stated?

Back

General

Front

What type of tolerance is circled in this drawing?

Back

Limit dimensions

Front

What type of tolerance is circled in this image?

Back

Unilateral

Front

Why are tolerances important in engineering drawings?

Back

Variation is unavoidable in manufacturing, Tolerances allow the designer to control variation, The wrong tolerance can add cost or make a part unusable.