... testing instrument is inproved.Main technique parameters:Normal type:The accuracy of the radial rotation is 0.003mm.The parallelism between the ... side leading track and the link of the two finials is 0.005mm(A03,B03,type),0.008(A05,B05type),0.02mm ... max diameter of the tested part is 250mm.The max lengths of the tested part are 300mm,500mm,1000mm. New Type of Bench Center ...