Final answer:
No, an unofficial auxiliary down indicator is not a required field equipment for a football game.
Step-by-step explanation:
No, an unofficial auxiliary down indicator is not a required field equipment for a football game. The only required field equipment for a football game includes the football itself, goalposts, field-marking equipment, and the chains or other systems used for measuring first downs. An unofficial auxiliary down indicator, such as a small flag or marker, may be used by officials to help indicate the down, but it is not necessary or mandatory.