This is the Scubapro Pressure Gauge Scuba Diving PG Available in Imperial /Metric Features: Compact pressure gauge with a brass case. Displays pressure 0-5000psi or 0-500bar. Comes with a rubber boot and HP hose. Available in Imperial or Metric versions. The smallest metal pressure gauge in the SCUBAPRO line. Ultra-compact brass case, offering psi from 0-5000 in 100psi increments, or bar readings from 0-500.