An hour is a unit of measurement. A ratio is a comparison of similar things. You can use hours within a ratio showing something over a measurement of time. For example as speed (25 miles/kilometers per hour) or hourly wages ($7.25 per hour).
An hour can also be a measurement of Right Ascension. This is a measure timing the passage of objects in the sky across the meridian as the Earth rotates. RA is measured in hours, minutes, and seconds.
interval
ratio
No, it is nominal.
Ratio
Only on the Kelvin scale.
Year of birth is interval level of measurement; age is ratio.
It is a ratio scale of measurement.
interval
Three basic levels of measurement are nominal, ordinal, and interval/interval-ratio.
Three basic levels of measurement are nominal, ordinal, and interval/interval-ratio.
Ratio. It has a true zero.
Nominal Scale < Ordinal< Interval < Ratio
It is ratio; it has a natural zero and is numerical data.
It is an interval scale. It is not a ratio scale, the next higher level, because the zero is arbitrary and not unique from one calendar to another.
Interval and ratio
nominal
Examples of ratio level of measurement are age, weight, and amount of money.