Rule 134 (p132) in the green book is about plus followed by minus and vice-versa. In those cases, a multipurpose indicator is needed to prevent the interpretation being ± (etc).
Here are are a few samples from the green book and NFB provisional guidelines:
Rule 134 (p132) in the green book is about plus followed by minus and vice-versa. In those cases, a multipurpose indicator is needed to prevent the interpretation being ± (etc).
Here are are a few samples from the green book and NFB provisional guidelines:
Note the presence of the
⠐
between the "+" and "-".