Countdown timer with ms

[Dboss]

Don't know how many of you look at professional pool or snooker matches.
I would like to get a countdown timer that includes mm:ss.ms .
Even the ability to add extra seconds of an extension is called.
In pool a player might have approximately 45 sec, to play a shot and in each rack a player can have an addition 15 /30/ 45 secs as extra time depending if the players calls for it.
But only one extension per game per player.

Most count down timers are in min:sec and not ms.
Thank you

 

[ByteBitten]

A somewhat cumbersome way, but it can do the trick:
Create an HTML file/page with a Javascript countdown (not to date, but total time).
Add a Browser source to the scene with 'Refresh browser when scene becomes active' ticked.

Have a page for every type of countdown you need, trigger the scene with the needed countdown page to start it.