signal tower meaning in English

信号楼
信号塔

The signal tower is the most unique building within the compound and was constructed to provide time signals to ships in the harbour
报时塔可谓整座水警总部最具特色之建筑，为海港船只报时。
The former marine police headquarters was constructed in 1884 , comprises a main building , a stable block and signal tower commonly known as round house
前水警总部建于一八八四年，整组建筑包括主楼、马厩及报时塔（俗称圆屋）。
The compound comprises a main building , a stable block and the special feature of a two - storey time - signal tower , where a time ball was dropped at 1pm every day until 1907 to enable ships in the harbour to check their chronometers
主楼本为一所两层高建筑，后于1920年代加建一层。日治期间，水警总部前草地下建有大规模地下通道二次大战后，遂封闭地下通道，及重铺草地。