Devise an experiment to find an expression for the acceleration of a uniform sphere (ball bearing) rolling down an inclined plane, as a function of the angle of incline. Hence deduce the value of $g$ within 1%.

How would I do this using simple equipment such as rulers and stopwatches? I.e without motion capture or breaker circuits?

If I am asked to devise an experiment to find an expression for the acceleration of a uniform sphere (ball bearing) rolling down an inclined plane, as a function of the angle of incline. Hence deduce the value of $g$ within 1%.

How would I do this accurately using simple equipment such as rulers and stopwatches? I.e without motion capture or breaker circuits? I think this method will suffice, but is there a way to account for the error more precisely?