Instrumental uncertainty

Question

What is the instrumental uncertainty of the clock and the odometer?

Answer 1

From the Internet:1. Instrumental Uncertainties. Every measuring instrument has an inherent uncertainty that is determined by the precision of the instrument. Usually this value is taken as a half of the smallest increment of the instrument scale. For example, 0.5 mm is the precision of a meterstick and 0.5 s is precision of a watch.

 

So, for a clock demarcated in minutes, it is .5 minute.

For an odometer demarcated in 1 mile increments, it is .5 mile.