Water Gauge: Standard, Series: 20-100, 5/8 in Sight Diameter, 3/8 in Connection, NPT Connection, 10 in Length, 300 psi Working, Rough Bronze, Apollo #2010103 Standards/Approvals: ASTM B584 C84400 Body ASTM B16 Stem ASME Specified ASSE Specified CSA Certified Canadian Registration No. 0F6616.5C PROP65: Cancer and Reproductive Harm 2010103