A twin tire pressure gauge is a specialized tool designed to measure the air pressure of two tires simultaneously, typically used for dual-wheel vehicles like trucks and RVs. It features two gauges connected to a single hose, allowing the user to check the pressure of both tires at once, ensuring uniform inflation. This tool helps save time and ensures accurate readings for dual tires, which are critical for even wear and safe driving. Twin tire pressure gauges are commonly available in both analog and digital versions.