What are the modes of calibration for measuring instruments?
Generally these are the calibration, but there are some calibration, individuals do not have professional things, not good to do, are sent to the maintenance of local calibrationBefore the start of the project, the instruments need to be calibrated and qualified reports from relevant departments can be put into use. The average time of validity is 1 years
The theodolite needs to be calibrated, the horizontal axis is perpendicular to the vertical axis, the cross wire is perpendicular to the horizontal axis, and the collimation axis of the telescope is perpendicular to the horizontal axis and the transverse axis is perpendicular to the vertical axis
You should be wondering what the measuring instruments usually need to be calibratedThe level instrument needs to be calibrated by the circular level axis cross cross level
