Vilter Manufacturing Co. Ammonia Pressure and Vacuum Gauges, Set of Two

Set of two industrial ammonia pressure and vacuum gauges manufactured by The Vilter Manufacturing Co. of Milwaukee, Wisconsin, featuring components produced by The Ashcroft Mfg. Co. of New York. One gauge features an intact glass face with dual pressure and vacuum markings up to 125 lbs, while the second gauge features a cracked glass face with markings up to 300 lbs and includes a rear mounting bracket. Both units display heavy wear, patina, and chipped black paint consistent with industrial use.