ABSTRACT
This chapter presents the work to develop a testing algorithm and evaluation program as a metrological strategy for roundness measurement. In this work program, the fitting software techniques equipped with 10 different strategy parameters using Talyrond-73 (TR-73) machine are studied experimentally. These parameters included two types of fitting filters, namely Gaussian and 2CR filters and four types of software algorithm techniques, namely least square (LS), minimum zone (MZ), minimum circumscribed (MC) and maximum inscribed (MI) techniques during four ranges of spectral wave numbers using undulations per revolution (UPR). The chapter shows the basic idea of four internationally defined fitting algorithm techniques of circles that are used in roundness measurement in National Metrology Institutes (NMIs) and industry today. The performance of the TR-73 accuracy in scanning measuring mode has been verified and accepted within standard specification. It confirmed that the TR-73 device as an ultra high precision machine is a powerful tool for roundness form metrology in modern engineering industries.
