千分尺專用量塊|千分尺校正塊：0-25千分尺專用量塊:是一種長度計量基準，主要用于千分尺值誤差的檢定,國標為：GB/T6093被檢千分尺 尺寸系列 塊數 標準 級別0-25 2.5,5.1,7.7,10.3,12.9 15,17.6,20.222.8,25 10 GB/T60930級、1級、2級25-50 27.5,30.1,32.7,35.3,37.9 40,42.6,45.2,47.8,50 10 GB/T60930級、1級、2級50-75 52.5,55.1,57.7,60.3,62.9 65,67.6,70.2,72.8,75 10 GB/T60930級、1級、2級75-100 77.5,80.1,82.7,85.3,87.9 90,92.6,95.2,97.8,100 10 GB/T60930級、1級、2級0-250-50 5.12,10.24,15.36,21.5,25 30.12,35.24,40.36,46.5,5010 GB/T60930級、1級、2級50-7575-10055.12,60.24,65.36,71.5,75 80.12,85,24,90.36,96.2,100