Ashcroft 1279 [451279AS04L300#] Duragauge Pressure Gauge w/Bronze Tube / Brass Socket, 4.5in Dial Size, ±0.5% Accuracy, 1/2in NPT, Lower Connction, 0 to 300 psi. The Ashcroft 1279 Duragauge pressure gauge is the finest production gauge on the market for industrial use where precise indications are required. The Duragauge product line offers a wide variety of case styles, Bourdon tubes and pressure ranges to meet your application needs. The Ashcroft 451279 Duragauge pressure gauge has a solid front case design that is field convertible to hermetically sealed or liquid filled style. The gauge has pressure ranges from vacuum to 30,000 psi. Various socket and Bourdon tube materials are available. The Ashcroft 451279 Duragauge pressure gauge has a micrometer adjustable pointer and 400 series stainless steel construction of moving parts, which wear better, facilitating longer life. A teflon-coated pinion also facilitates longer life. The Ashcroft 451279 Duragauge pressure gauge is part of the receiver gauge family. Ashcroft receiver gauges are used in conjunction with pneumatic transmitters to indicate pressure, temperature, flow or other process parameters that can be transmitted by proportional variations in air pressure. The Ashcroft 451279 Duragauge pressure gauge's PLUS! performance option provides liquid-filled performance in a dry gauge - fighting vibration and pulsations without liquid-filled headaches. With the component combinations available in the Duragauge gauge line, over ten million variations are possible serve the needs of all types of industries, including process, power, nuclear, aerospace and cryogenics.