What do the numbers on a clipper guard signify?

The numbers on a clipper guard indicate the length of hair that will be left after the cutting process. Each guard size corresponds to a specific length, allowing barbers to achieve consistent and precise haircuts based on the desired style. For example, a #1 guard typically leaves about 1/8 inch of hair, while a #2 guard leaves about 1/4 inch, and so on. This numbering system helps barbers communicate and select the appropriate guard when cutting hair to ensure the right length is achieved. Understanding this measurement is critical for delivering satisfactory results to clients, as different styles require varying lengths of hair.

Other options relate to different aspects of clipper operation or performance and do not pertain to the guard's purpose in length determination.