SETT ATT OKA NOGGRANNHETEN HOS ETT LENGDMETSYSTEM GENOM ATT KALIBRERA DETTA MOT ETT NOGGRANNARE REFERENSSYSTEM

摘要

A method of increasing the accuracy of a length measuring system by calibrating the system against a more accurate reference system. A scale system in the length measuring system is made an absolute measurement scale system and is constructed in accordance with a principle which produces a gradually rising or falling error contribution. This can be achieved by constructing a mean value from separate readings of a least two scale graduations or divisions.