Back Mount 1/8" 1/4" BSP NPT Male 60mm Dial Pressure Gauge SUS 304 Stainless Steel Bar PSI Display N2 Steam Pneumatic Homebrew Back Mount 1/8" 1/4" BSP NPT Male 60mm Dial Pressure Gauge SUS 304 Stainless Steel Bar PSI Display N2 Steam Pneumatic Homebrew. Sale price : $13.84 Category : Home Improvement