Software for Calculation and Analysis of ISO System of Tolerances, Deviations and Fits

This paper is based on the basic concept of ISO System of tolerance. We will discuss fundamental deviation, fundamental tolerance, and the calculation of tolerance according to the symbol used. The focuse of the paper is software for quick calculation and analysis of ISO system of tolerances, deviations and fits. Begining of the paper explanes the basic concepts of ISO system of tolerances and fits, after that, paper describes in detail the design and implementation of above mentioned software. The software is named ETolerances. Except the description of design and implementation proces, paper explains how to use E-Tolerance software. In the end it was said a few words about the possibilities of upgrading the software.