In order to avoid the influence of the middle block in the detection of the error of the marking line of the tower,this paper discusses the detection method of the height caliper and the total station,and establishes the math-ematical model for the test.The test shows that the error of the marking line at both ends of the tower ruler is not more than-0.20mm.The indicating error of the full range is less than 0,and the overall marking value is small,and the indicating error at the 3750mm marking point is the maximum of-1.40mm,which meets the requirement of the full-length(5m)error less than±3.0mm in the JJG 8-1991"Level Rod"verification regulation.
关键词
计量学/塔尺/高度卡尺/全站仪法/示值误差
Key words
metrology/sliding staff/height caliper/total station method/indication error