B"H This liquid filled pressure gauge measures pressure from 0-600 PSI. Ideal for hydraulic or pneumatic systems, compressors, pressure washers, and other fluid power applications. The 0-600 PSI range is well matched to hydraulic power units, log splitters, and medium-duty hydraulic cylinders where pressures well exceed standard pneumatic ranges. Liquid filling dampens needle vibration for stable, accurate readings in high-pulsation environments.