卡尺检定专用量块是一种长度计量基准，主要用于卡尺示值误差的检定，精度分为2、3级。套别套块数级别尺寸系列 间隔 块数 1120,1,2,310.20.20,41.2￣1251.2,81.5,101.2,121.5121.8,191.8,201.5,291.8260,1,2,3101.2,200,291.5￣6375,451.8,490360,1,2,3201.2，400，581.5 750，901.8，990460,1,2,341.2,81.5,121.8￣610,20,20560,1,2,351.2,121.5,191.8￣610,20,20630,1,2,3101.2,201.5,291.8￣3