Plus-Minus Sign vs Plus + Hyphen
Compare the Unicode plus-minus sign (±) with the ASCII approximation '+/-' -- a single typographic symbol vs a multi-character sequence used in science and engineering.
Plus-Minus Sign
U+00B1
คัดลอกแล้ว!
Plus Sign
U+002B
คัดลอกแล้ว!
Hyphen-Minus
U+002D
คัดลอกแล้ว!