由中国计量科学研究院、山东齐鲁石化公司和国家大容量计量运城检定站等单位联合研制的卧式罐数显光学直径精密测量仪，于不久前通过专家鉴定。该仪器采用先进的光、机、电、仪综合技术，以光学系统的视难轴通过多个五角棱镜的转折与移动，使之与被测罐体的测点相切进行准直测 By the Chinese Institute of Metrology, Shandong Qilu Petrochemical Company and the National Metrology Yuncheng test station and other units jointly developed horizontal tank digital optical diameter measuring instrument, not long ago by experts. The instrument uses advanced optical, mechanical, electrical, instrument integrated technology to optical system as hard axis through a plurality of pentagonal prism of the turning point and the movement, so that the measured point tangent tank measured collimation