What must be provided to any investigator or inspector regarding services performed outside of licensed shops?

The requirement to provide an appointment book to any investigator or inspector regarding services performed outside of licensed shops stems from the necessity of maintaining accurate records of services rendered. An appointment book serves as a detailed log that outlines the dates, times, and nature of the services provided to clients. This documentation is essential for regulatory compliance, as it demonstrates that the service provider is operating within the legal framework set by the barbering board and fosters transparency in business practices.

The appointment book helps investigators verify that the services being performed outside of licensed facilities are still in accordance with the regulations that govern the barbering profession. Keeping comprehensive records not only upholds professionalism but also helps protect both the service provider and the clients by providing proof of services rendered in case of any disputes or claims.

While the other choices may seem relevant, they do not fulfill the specific requirement of accurate and detailed record-keeping that an appointment book offers. An equipment list may outline tools available for use, client testimonials may provide opinions about services, and home service approvals could refer to permissions for operating outside of a licensed shop. However, none of these options offer the necessary detailed account of services performed, which is crucial for inspection and regulation purposes.