How is 'Teeth Per Millimeter' defined?

'Teeth Per Millimeter' is defined as the metric equivalent of teeth per inch. This measurement is crucial in the context of cutting tools, specifically saw blades, as it indicates the density of cutting teeth present along a certain length of the blade. This metric provides valuable information regarding the blade’s capability and efficiency for specific materials or cutting operations.

Understanding this term helps in selecting the appropriate blade for various applications. A higher number of teeth per millimeter typically allows for smoother cuts, while a lower number can facilitate faster cuts in thicker materials. In contrast, the other options focus on different aspects of band saw blades, such as the actual diameter of the teeth, the total number of teeth on the blade, or an indication of wear, none of which directly pertain to the definition of 'Teeth Per Millimeter.'