Which term refers to the number of teeth per inch on a file?
Cut
A file is described by its length, its shape or profile, and its cut, which covers how the teeth are formed and spaced on the face.
The spacing of those teeth, expressed as the number of teeth per inch of file length, is the pitch of the file, and the coarseness of that spacing defines the cut of the file.
Shape refers to the cross-section (flat, half-round, etc.) and length to the overall size, so neither describes teeth per inch.
Among the given terms, the one used for how the teeth are spaced per inch on the file face is its cut.
Hence, the answer is Cut.
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