| Subject | English | Thesaurus |
| mil., abbr. | Crankshaft Start Generator | CSG |
| mil., abbr. | Message Generator | MG |
| abbr. | rotary pulse generator | shaft encoder (ssn) |
| abbr. | rotary pulse generator | shaft-position encoder (ssn) |
| abbr., scottish | Telegraph & Data Message Generator | TDMG (UK) |
| mil., abbr. | Test Message Generator | TMG |