What tool is commonly used to achieve precise hair lengths when cutting?

Using a comb is essential for achieving precise hair lengths during cutting. The comb helps to lift and separate the hair, allowing the barber to see the lengths more clearly and ensure an even cut. It provides control over the hair, enabling the barber to guide the scissors or razor while ensuring that the desired length is maintained throughout the haircut process. Additionally, the comb can be used to help establish and maintain tension in the hair, which is critical for precision cutting.

While scissors, razors, and clippers are important tools in the barbering toolkit, their effectiveness in achieving precise hair lengths heavily relies on the use of a comb to properly section and angle the hair. Each of those tools serves a different purpose—scissors for snipping and layering, razors for texturizing, and clippers for uniform length—but without a comb, achieving exact lengths becomes much more challenging.