What is the common measure of distance used to indicate the advancement per tooth in a multi-cutting edge tool?

The measure of distance used to indicate the advancement per tooth in a multi-cutting edge tool is referred to as "Feed per Tooth." This term is essential for understanding how much material is being removed by each individual cutting edge during machining operations. In essence, it quantifies the amount of movement the tool engages with the workpiece for each cutting edge as it rotates.

When a tool has multiple cutting edges, knowing the feed per tooth helps in calculating the total feed rate, which directly influences machining efficiency, surface finish quality, and tool wear. Properly setting this parameter ensures that each tooth is contributing effectively to the cutting process without overloading any single edge, which can lead to premature tool failure or poor surface quality.

The other options represent related concepts but do not specifically describe the advancement per tooth for multi-edge tools. For instance, feed rate refers to the overall rate at which the tool moves during operation, while cutting distance might pertain to the total length of the cut rather than the contribution of individual teeth. Rotational advance does not generally apply as a standard measure in machining contexts.