LPG3-D0042N is a series LPG3 low pressure gauge. It is designed to be especially sensitive with an elastic element that expands and contracts with very small changes in pressure for ASME grade 1A accuracy. This series is meant for the measurement of low pressures of gases and liquids and is ideal for air flow indicators, liquid level indicators and draft gauges. Our new low pressure gauges are available in 2-1/2˝ dial with either a bottom or back connection option.