horizontal length measuring machine

... horizontal alighnment 水平对准，水平校准 horizontal length measuring machine 卧式测长仪 horizontal le angle 透镜浅平角，物像场水平角 ...

 horizontal metroscope

... horizontal metroscope 卧式测长仪 vertical metroscope 立式测长仪 universal horizontal metroscope 万能卧式测量仪 ; 卧式万能测距水平仪 ...