graduation; scale marking; division
Refers to the marks or lines on a measuring instrument such as a ruler, thermometer, or scale. Used for both the individual marks and the system of markings.
This thermometer has fine graduations and is easy to read.
I measured the length using the markings on the ruler.
I read the thermometer's scale and recorded it.
I set the dial's scale to zero.
This ruler has fine graduation marks engraved on it.
The needle moved three scale units to the right.