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| Morse-Schnelltelegraph n | |||
| automatisches Wheatstone-System | |||
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Wheatstone : 26 phrases in 11 subjects |
| Analytical chemistry | 1 |
| Automated equipment | 1 |
| Chemistry | 1 |
| Earth sciences | 1 |
| Electronics | 6 |
| General | 1 |
| Medical | 3 |
| Metallurgy | 1 |
| Optics branch of physics | 4 |
| Physics | 3 |
| Technology | 4 |