| Subject | English | French |
| gear.tr. | inner spacewidth | intervalle de dent conique interne (of a bevel gear) |
| gear.tr. | normal spacewidth | intervalle réel |
| gear.tr. | outer spacewidth | intervalle de dent conique externe (of a bevel gear) |
| mech.eng. | spacewidth half angle | demi-angle d'intervalle de la roue conique |
| tech., mech.eng. | spacewidth half angle | demi-angle d'intervalle |
| gear.tr. | transverse spacewidth | intervalle apparent |