What is the minimum number of lather machines required in a barber shop?

In Nevada, the law does not mandate a specific requirement for the number of lather machines in a barber shop. This provides flexibility for barbershop owners in determining how they want to equip their establishment. Because there is no legal restriction or minimum requirement, it is permissible to operate a barber shop without any lather machines at all. Therefore, the choice indicating that none are required is accurate and aligns with the regulatory framework laid out for barber shops in Nevada. Other options suggest minimum quantities that are not stipulated by law, hence do not reflect the regulatory requirements accurately.