Rubuta ci gaba don wannan sakin layi - An ba da Coats Observatory tare da nau'ikan kayan aikin kimiyya don lura da sararin dare da yin bayanan yanayi. A cikin 1900 an shigar da kayan aikin sa ido na girgizar ƙasa don yin rikodin girgizar ƙasa. Coats Observatory na ɗaya daga cikin tashoshin a duk faɗin duniya wanda ya yi rikodin girgizar ƙasa ta 1906 San Francisco
Ka yi haƙuri.