Riddle me this:
I form ticks and crosses,
But I have not a pen.
You check me during pauses,
Every now and then.
I have a pair of hands,
But I have not an arm.
Every day demands,
For me to use my charm.
I only have one joint,
Which you could call my shoulder,
From which my hands point,
To the values 'round the border.
I don't always comply,
But what I tell won't end;
My power source might die,
Though time will still transcend.
What am I?
I will provide two hints in due time. I also accept three different answers to this (because they are really the same thing).
The title is also a clue.
Well, I might just provide the first hint for the fun of it, but not the second.
Hint:
The values are numeric,
And placed in order, too.
My invention is historic,
As without it, what is due?