[Math] symbol for ‘Has Units of’

notationunit-of-measure

Is there a shorthand way to note that a variable has certain units?
I vaguely recall using a boxed equals sign '[=]' as in:

x [=] feet

But I'm not sure if that's an accepted standard or if I made that up when were doing dimensional analysis in 10th grade.

Thanks!

Best Answer

I would argue that the box notation above would be used in the following context, for velocity $v$ $$[v ] = \frac{[L]}{[T]}$$

Where \begin{align} [L] &= m \\ [T] &= s \end{align} For units of length, $m$ in metres and time, T in seconds.