Simple plumbs, i.e. loads, hanging by a thread, always gave a fairly accurate vertical, and the flexible tube filled by water with ends facing up was used as a simple water level.
Simple plumbs, i.e. loads, hanging by a thread, always gave a fairly accurate vertical, and the flexible tube filled by water with ends facing up was used as a simple water level.
user
Прості відвіси, тобто підвішені на нитці вантажі, завжди давали досить точну вертикаль, а гнучка трубка, наповнена водою з кінцями, поверненими вгору, використовувалася як найпростіший водяний рівень.
assistant