Question

What is the least count of your wristwatch? Is it same for all kind of watches.

Answer 1

The least count of a device is the smallest measurement that can be taken accurately with it.

For analog wrist watches, the smallest measurement that can be taken accurately is 1 second.

So the least count is 1 second.

For different types of watches least count may vary because many watches are designed in such a way that they can measure time in milliseconds and microseconds.