Which term describes a tolerance in which variation is permitted in both directions from the specified dimension?

Which term describes a tolerance in which variation is permitted in both directions from the specified dimension?

• A. Nominal Size
• B. Tolerance
• C. Reference Dimension
• D. Limit Dimensions

Answer: (D)

Two-sided variation is described by limit dimensions: you set an upper limit and a lower limit, and the actual size must lie between those two bounds. This explicitly communicates that variation is allowed in both directions from the specified dimension. The nominal size is just the target value, not the allowable range. A reference dimension is informational and doesn’t control size. A general tolerance describes how much variation is allowed, but limit dimensions are the explicit two-bound specification that captures variation on either side.

Two-sided variation is described by limit dimensions: you set an upper limit and a lower limit, and the actual size must lie between those two bounds. This explicitly communicates that variation is allowed in both directions from the specified dimension. The nominal size is just the target value, not the allowable range. A reference dimension is informational and doesn’t control size. A general tolerance describes how much variation is allowed, but limit dimensions are the explicit two-bound specification that captures variation on either side.