Geometrical tolerancing

Characteristic Specification Symbol Unicode character Datum Needed 3D Rendering for lines 3D Rendering for surface
Roundness Form U+25CB No
Position Location U+2316 Yes
Perpendicularity Orientation U+27C2 Yes
Parallelism Orientation U+2225 Yes
LineProfile Orientation U+2312 Yes
Line profile Form U+2312 No