| ▲ | watersb 5 hours ago | |
These TMSLs were also reasonably common in classrooms in the United States in the 1950s. Two Meter Slide Rule | ||
| ▲ | watersb 5 hours ago | |
These TMSLs were also reasonably common in classrooms in the United States in the 1950s. Two Meter Slide Rule | ||