1)coincidence vail,合像水准器2)prismatic level,棱镜合像水准器3)split bubble level,拼合气泡式水准器4)circular bubble,圆水准器5)axis of leveling bubble,水准器轴6)level tester,校水准器
用法例句
After the displacement between the center of the bubble and the scale circle is detected through a revised randomized Hough transform, the scale unit and the sensibility of circular bubble can be obtained.