1. Engineering tolerance is the permissible limit or limits of variation in
1.1. a physical dimension;
1.2. a measured value or physical property of a material, manufactured object, system, or service;
1.3. other measured values (such as temperature, humidity, etc.
1.4. in engineering and safety, a physical distance or space (tolerance)
1.5. in mechanical engineering the space between a bolt and a nut or a hole, etc
2. How to measure tolerance
2.1. Tolerance is the total amount that a specific dimension is permitted to vary. It is the difference between the maximum and the minimum limits for the dimension ---- & gt; Total Tolerance = maximum limit - minimum limit