snippet: Duro United, 4131-5711-CERT, Series 13 0-300 psi, 4-1/2" Altitude Gauge with Case #1, 1/4 NPT Bottom This series is designed for use in indicating height of water in tanks, stand pipes, reservoirs, or hot water heating systems. Features: <ul><li>Movement: Sturdy corrosive resistant bronze bushed rotary type movement with bronze links and stainless steel link screws. </li> <li>Pointer: Lightweight balanced construction with adjustment feature and adjustable red set hand. </li> <li>Dial: Heavy gauge aluminum. 4-1/2" </li> <li>Window: Glass </li> <li>Connection: Brass machined connection with wrench flats, 1/4" NPT male connection at bottom of case. </li> <li>Accuracy: ASME/ANSI B40.1 Grade 1A (1%) </li> </ul>

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