A really simple (forward-counting) TIMER, beautifully designed .
It shows hours, minutes, and seconds.
When you press the "on/off" button, it starts (forward) at 0 hours : 0 minutes : 0 seconds. And, when you stop it (again from its "on/off" button), it is reset back to 0 hours : 0 minutes : 0 seconds.
(Forward-counting) TIMER [showing hours, minutes, seconds].pd