Geometrical tolerancing

Characteristic Specification Symbol Unicode character Datum Needed 3D Rendering for lines 3D Rendering for surface
Surface profile Location U+2313 Yes
Line profile Location U+2312 Yes
Symmetry Location U+232F Yes
Coaxiality for median lines Location U+25CE Yes
Concentricity for centre points Location U+25CE Yes
Position Location U+2316 Yes