Hey Josh, hey @elw,
We also have a search function.
By the way, according to the lexicographic rules of SI units, there is always a space between the value and the unit, like this: 80 mm
- The value of a quantity is written as a number followed by a space (representing a multiplication sign) and a unit symbol; e.g., 2.21 kg, 7.3×102 m2, 22 K. This rule explicitly includes the percent sign (%)[16]: 134 and the symbol for degrees Celsius (°C).[16]: 133 Exceptions are the symbols for plane angular degrees, minutes, and seconds (°, ′, and ″, respectively), which are placed immediately after the number with no intervening space.
– Source: International System of Units – Lexicographic conventions
The fact that many U.S. americans and the remaining imperial units users in the UK and Canada write every unit without space after the value, probably comes from the fact that indeed the inch and the foot, when they are used with the second and minute signs (″ and ′) are written without space. So maybe they believe this applies to all other units too. But the US customary and imperial units ‘in’, ‘ft’, and ‘yd’ already require the space.
The SI also prescribes the use of a space[24] (often typographically a thin space) as a thousands separator where required. Both the point and the comma are reserved as decimal markers.
1 000 000 000 000 (thin space) or 1000000 not 1,000,000 or 1.000.000
– Source: Space – Unit symbols and numbers
Like this: Spindle speed: 6 000 – 24 000 rpm
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