This is the only one I have seen in unicode (plus over minus):
±
HTML/XML Character reference:
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HTML Named Entity:
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This symbol is used to indicate the precision of an approximation.
Answer from gillytech on Stack OverflowThis is the only one I have seen in unicode (plus over minus):
±
HTML/XML Character reference:
±
HTML Named Entity:
±
This symbol is used to indicate the precision of an approximation.
Answer from gillytech on Stack OverflowThis is the only one I have seen in unicode (plus over minus):
±
HTML/XML Character reference:
±
HTML Named Entity:
±
This symbol is used to indicate the precision of an approximation.
You can approximate it to some extent with a superscript plus (U+207A), a division slash (U+2215) and a subscript minus (U+208B):
⁺∕₋
However, it requires font support to get right. Especially the super- and subscript +/− are not available in most fonts, so it might just render horribly.
For reference, that's how it looks for me (better than five years ago, but still somewhat broken):
However, using Cambria Math in Word 2010 it looks like this:
Which probably is exactly how it should look like (follows the same typesetting rules as fractions).