The Vintage Superior Co New York City Altitude & Thermometer Gauge is a unique industrial gauge with a 4-inch face diameter and a 3/4 inch connection diameter. Designed for side/top mounting in the United States, this gauge measures altitude in feet and temperature in degrees Fahrenheit. With a maximum pressure of 70 psi, this retro gauge is a rare find for collectors of vintage industrial equipment. Perfect for adding a touch of nostalgia to any workspace or collection, this gauge is a functional and decorative piece for those with a love for industrial history.