1. Emerald Calibrations 8612 S 228th St, Kent, WA 98031 Coordinate: 47.39786,-122.22494 Phone: (253) 850-1208
2. Tektronix 20811 84th Ave S, Kent, WA 98032 Coordinate: 47.41426,-122.22876 Phone: (253) 479-2104