In localization field, there are fixed rules about the spacing between numbers and symbols. We should keep the rule during the translaition and always keep the same usage to make the whole text in same format. Do not use spacing in this case and use spacing in that case. we should keep the consistency in mind at any time.

Please see the below tables for reference.

Spacing of Numbers and Symbols:

Do not use a space for these:

Negative – -4 °C
Positive + +18
Plus minus ± 60±5 °C
Greater than > >1000
Less than < <1000
Greater than or equal to ³ ³1000
Less than or equal to £ £1000
Range of numbers – 18–28
Range of degrees – 36–46 °C
Percent % 90%

Use a space for these:

Minus – 4200 – 1200 = 3000
Plus + 8 + 28 = 36
Times × 6 × 8 = 48
Equals = 100 – 50 = 50
Degree ° 36 °C

Use a space between numbers with units of measure:

0,1 mg 37 °C 100 mL

Symbols

The following symbols must be created using the ANSI code. Some symbols will require that you apply Symbol font (noted below):

“ Alt + 0147
” Alt + 0148
° Alt + 0176
– Alt + 0150 (en dash)
× Alt + 0215 (multiplication symbol)
± Alt + 0177
© Alt + 0169s
® Alt + 0174
™ Alt + 0153
µ Alt + 0181
a Alt + 097 (Symbol font)
b Alt + 098 (Symbol font)
£ Alt + 0163 (Symbol font)
³ Alt + 0179 (Symbol font)