The need to gauge the divisions of the day and night led the ancient Egyptians, Greeks and Romans to create sundials, water clocks and other early chronometric tools. 古埃及人、希腊人与罗马人为了测定昼夜之别，发明了日晷、水钟及其他早期计时工具，后来由西方世界继承了这些技术。
Class 14 Precious metals and their alloys and goods in precious metals or coated therewith, not included in other classes jewellery, precious stones horological and chronometric instruments. 类别14不属别类的贵重金属及其合金，以及不属别类的贵重金属制品或镀有贵重金属的物品；珠宝，宝石；钟表和计时仪器。
Class 14 Precious metals and their alloys and goods in precious metals or coated therewith, not included inother classes; jewellery, precious stones; horological and chronometric instruments. 不属别类的贵重金属及其合金，以及不属别类的贵重金属制品或镀有贵重金属的物品；珠宝，宝石；钟表和计时仪器。
Class 14 Precious ls and their alloys and goods in precious ls or coated therewith, not included inother classes; jewellery, precious stones; horological and chronometric instruments. 商标注册类别14不属别类的贵重金属及其合金，以及不属别类的贵重金属制品或镀有贵重金属的物品；珠宝，宝石；钟表和计时仪器。
