Wallclock format

I am using wallclock to get the interval between of the start of a event and the mouse click. So I store it, reset the time and start the wallclock again. I wonder if the format of this interval is in milliseconds or not and if not, how can I format it in milliseconds.

I am pretty sure it is in milliseconds. The game timer is in milliseconds.

If so, could you please tell me how can I do to get this format: x.xxxxxxxxxxxx and convert to: x.xxx?

I found the answer in this thread:

I found the answer in this thread:

Good! Yes it can be rounded to show as actual clock time and there is even a tutorial that shows a wall clock with hands being used.