Valve-mercury closure to capillary for barometers. (Machine-translation by Google Translate, not legally binding)

摘要

Mercury capillary closing valve for barometers, characterized in that it comprises a tubular body with a sealed head and a through hole, provided inside with respective retaining means on the tubular mouth in which it acts, which presents through the through hole a stud conveniently retained and endowed by one of its ends of the respective drive handle, while in the opposite one, it shows a small tip of different material in order that when the device is adapted to the mercury deposit of the device on which it acts and takes into account what's said (Machine-translation by Google Translate, not legally binding)