PSI Barbering Practice Exam 2026 – All-in-One Resource to Master Your Certification!

The part of the shear that controls the distance between the blades is referred to as the offset. This component is crucial because it affects the alignment and movement of the blades when cutting hair. An appropriate offset ensures that the blades can come together properly to create a smooth cut while maintaining the necessary gap to prevent any pulling or snagging of the hair.

The cutting edge pertains to the sharp part of the shear where the actual cutting occurs, but it does not influence how far apart the blades are from each other during operation. The tension screw is used to adjust the tightness of the blades, allowing for a smoother or more controlled cutting action, but it does not control the actual distance between the blades. The thumb rest provides comfort and stability for the barber's hand while cutting, but it doesn't play a role in the distance between the blades themselves. Understanding these details is vital for performing haircuts effectively and maintaining the shears appropriately.