U+232D "⌭" Cylindricity Unicode Character

U+232D "⌭" Cylindricity is a graphic symbol used in technical drawing and geometric dimensioning and tolerancing (GD&T) to indicate that a cylindrical surface must be within a specified tolerance zone of two concentric cylinders. Part of the ISO 8000 standard for engineering notation, this symbol appears on blueprints and schematics to communicate that the entire surface of a part, along its axis, should maintain a uniform, true cylindrical form without tapering, barreling, or other deviations. It represents a strict manufacturing requirement, ensuring that features like shafts or bores meet precise rotational symmetry and straightness specifications.