What does the circular runout symbol look like?

• A. A circle with a cross in the middle
• B. Three horizontal parallel lines with the middle one longer than the others
• C. An arrow going to the top right at a 45 degree angle
• D. Two arrows going to the top right at a 45 degree angle

Answer: (C)

The circular runout symbol is represented by an arrow pointing to the right at a 45-degree angle. This symbol indicates that the feature must maintain a certain level of roundness and uniformity as it rotates. Circular runout controls the allowable variation in the circular features, ensuring that all points on the surface are within specified limits when the part is in motion.

Other options do not represent the circular runout symbol. The first option, depicting a circle with a cross, is often confused with other types of geometric controls but does not signify circular runout. The choice with three horizontal lines represents a different type of dimensioning or tolerance symbol, not specifically circular runout. The selection with two arrows going to the top right is more representative of a different geometric constraint or tolerance type, also not relevant to circular runout.