Search
- Technical Drawing, "Action Office System Computer Control Console," 1968 -
- 1968
- Collections - Artifact
Technical Drawing, "Action Office System Computer Control Console," 1968
- Technical Drawing, "Action Office System Computer Control Console," November 5, 1968 -
- November 05, 1968
- Collections - Artifact
Technical Drawing, "Action Office System Computer Control Console," November 5, 1968
- Rail Cross Section - Early railroads experimented with many rail shapes. The earliest tracks used longitudinal stone or wood stringers capped with iron strap rails, but strap rails worked loose over time. Solid T rail, like the section shown here, quickly proved superior. The head of the rail offered a solid running surface while the foot at bottom provided strength and stability.
- Collections - Artifact
Rail Cross Section
Early railroads experimented with many rail shapes. The earliest tracks used longitudinal stone or wood stringers capped with iron strap rails, but strap rails worked loose over time. Solid T rail, like the section shown here, quickly proved superior. The head of the rail offered a solid running surface while the foot at bottom provided strength and stability.