| Subject | English | German |
| gear.tr. | double flank error | Zweiflanken-Wälzabweichung |
| gear.tr. | total composite error-double flank | Zweiflankenwälzfehler (at single gear revolution) |
| gear.tr. | total composite error-double flank | Zweiflankenwälzabweichung (at single gear revolution) |