Njengokuba besesitshilo kwinqaku elidlulileyo, iGreat Westminster Clock yinxalenye yeTower of Westminster kwaye abantu abaninzi ngempazamo bayichaza njengeBig Ben, kodwa kwakwinqaku elinye besele sichazile ukuba eli gama lifanele ukuba nalo. amakhalane ngeyure nganye edlulayo.
Ke, iGreat Westminster Clock yenziwe ngezinto ezahlukeneyo, kubandakanya ubuso becala lewotshi, iintsimbi, inqaba, isandla esiphawula iyure kunye nezinye, nganye nganye kwezi zinto zinendlela yeVistorian Gothic , Yenziwe ngezitena ezigqunywe ngelitye, oku ngendlela ngokubanzi kwinkcazo.
Ubuso bewotshi nganye ziimitha ezingama-55 ukuphakama, le wotshi yenye yezona zinkulu ehlabathini ngexesha lokwakhiwa kwayo. Isandla esiphawula imilinganiselo yeyure eyi-2.7 yeemitha, ngelixa ebonisa imizuzu engama-4.3 eemitha. Zonke ezi zinto zacwangciswa kwinqaba enkulu, ehlala kwisiseko se-15 × 15 yeemitha, kwaye esi siseko kufuneka sixhase ubunzima obuziitoni ezingama-8667.
Ukungahambi kakuhle kwale ndawo kubangele ukuba le nqaba ithambekele kwicala elingasemntla ntshona ngeemitha eziyi-220 nje kuphela, into engakhange iyichaphazele eyona njongo yesi sikhumbuzo sikhulu. Iwotshi eNkulu yaseWestminster yaqala ukusebenza ngoSeptemba 7, 1859 ukuza kuthi ga namhlanje.