Is there any instrument in the world that measures the distance error to zero, including electronic measurement?
Measurement errors are always unavoidable, because actual or permanent measuring tools cannot be accurate to the minimum distance that human beings can distinguish by means of instruments.
Also mainly depends on what aspects, if it is satellite positioning, the error of 1 meters is already accurate positioning, and if it is to measure the distance between the CPU internal electron tube, it is accurate to nano level is accurate
NoNow the instrument can only be controlled within a certain range, such as: 1 cm, 1 microns, 1 nm, etc. the error can only be infinitely small, can not be completely avoided
