The Maximus Pressure Gauge is a quality pressure gauge that features a plastic case,built-in snubber, acrylic lens, and excellent 1.5% offull range accuracy. The PG100’s liquid fill providesboth shock protection and lubrication for a long,trouble-free service life. Specifications: Accuracy: ±1.5% full scale, BFSL Dial: Dual Scale PSI & 100x kPa Process Connection: ¼" NPT(M), bottom Wetted Materials: Brass Case: Plastic Lens: Acrylic Fill Liquid: Glycerin