Survey.
a device for determining true horizontal or vertical directions by the centering of a bubble in a slightly curved glass tube or tubes filled with alcohol or ether. Also called level .
[ 1760-70 ]
Survey.
a device for determining true horizontal or vertical directions by the centering of a bubble in a slightly curved glass tube or tubes filled with alcohol or ether. Also called level .
[ 1760-70 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012