DANCO Gas Test Gauge for 0-15 psi at 1/10 Increments, Chrome-Plated (94352) TEST the pressure of the gas in your tank up to 15 psi using 1/10th increments DURABLE plastic face resists breaking with chrome-played body for safety and a sturdy steel case EASY TO READ with clear facing that helps to see pressure measurement with ease GAUGE is DESIGNED to fit onto 3/4 inch MPT threads INTENDED FOR USE to gauge the pressure of the gas in your tank