San Antonio Missions National Hist. Park Pin - Benchmark

The benchmark is a permanent mark established at a known elevation that is used as the basis for measuring the elevation of other topographical points in a given area. Not only do they serve this surveying purpose, they happen to look cool too! That's why we've produced a cast metal benchmark pin representing San Antonio Missions National Historical Park. Pick one up and add to your collection. A rubber stud clutch attachment securely affixes this pin to any fabric surface.

• Official park pin approved by the National Park Service for San Antonio Missions National Historical Park
• Size: 1 1/8" round