Scope and ContentA blueprint-style engineering document featuring technical illustrations and measurement tables for two types of gate valves: Chapman and Jenkins. The left side contains the Chapman Gate Valve size chart, while the right side presents the Jenkins Gate Valve specifications. The central illustration provides a detailed technical drawing of a gate valve, labeling dimensions such as height, width, and structural components. The note at the bottom explains that the 4½-inch valve is longer than the 5-inch due to construction differences. This document is a crucial reference for engineers and manufacturers involved in fluid control systems in the late 19th century.