User:Rao SR

I have started this page as a trial for handling a session on creating  OER 

Introduction

One of the problems of Manufacture is that nothing can ever be made exactly to a size.

The surface of any component, even the smoothest, will vary. Thus, an inherent part of dimensioning must be a definition of the allowable variation.

The permissible variation of a dimension is termed the ''tolerance. So, ''not only must dimensions be defined on a drawing but also tolerances.

Importance
 * It is impossible to Manufacture a part to an exact size or goemetry
 * since variation from teh drawing
 * large variation
 * Small variation
 * Presise manufacturing
 * Inspection, rejection


 * 1) Assemblies
 * 2) *dimensions
 * 3) Interchangability
 * 4) Replacement
 * 5) Functionality
 * 6) Size
 * 7) Shape