Question

what is used to rate the coarseness of a band saws blade?
hardness of the blades teeth
teeth per inch
revolutions per minute
length of the blades teeth

Explanation:

The coarseness of a band saw's blade is rated by the number of teeth per inch. A higher number of teeth per inch indicates a finer blade, while a lower number indicates a coarser blade. The hardness of the blade's teeth relates to durability, revolutions per minute is about the speed of the saw, and the length of the blade's teeth is not the standard measure for coarseness.

Answer:

teeth per inch