San Francisco, California Water Department Meter Box Cover. Cast Iron. Oval. 9 7/8 x 6 3.8. Black. Raised Lettering. San Francisco Water Dept. . Golden Gate Meter Box. Golden Gate Bridge Engraved. Water Ford Meter Box Co. Reverse Side has engraved Pat No. 2619837, Pat. No. 2885797. Bottom of Back "FYL" Heavy and Interesting.