I'm looking for a font that has the glyph for Unicode character U+2245 ("approximately equal to", the equality sign with a tilde above it) for use on Windows 7. I have checked the main fonts and so far have not found it.
EDIT: Here's a picture of what happens with Cambria Math. You can see the selection-rectangle for the font at 12pt is very tall indeed, which is affecting line-spacing. The text is actually single-spaced.