Rounding symbol (approximately equal) in AutoCAD.

To display a rounding character you can use the following Unicode symbols in AutoCAD:

≅ \U+2245 equal with a swung dash
≐ \U+2250 equal with a dot

You have to select one of the fonts that contain mathematical symbols (e.g. Arial Unicode, Lucida Sans Unicode, etc.).

See also Unicodes.dwg on www.xanadu.cz/download