| Subject | English | Finnish |
| IT, dat.proc. | absolute line reference | absoluuttinen riviviite |
| transp., avia. | horizontal reference line | perusviiva |
| tech. | reference line | nollaviiva |
| commun., IT | reference line unit | vertailujohtoyksikkö |
| commun., IT | reference line unit | referenssijohtoyksikkö |
| comp., MS | wall reference line | seinän nollaviiva (The line that extends from the wall begin point to the wall endpoint. Although the wall reference line is typically centered on the wall or aligned with one edge of the wall, you can locate it any distance you want from the wall) |