Tolerances Application
Tolerance Syntax
- Limits . The high limit value is placed above the low limit value. A single line limit may be shown by placing the low limit before the high limit with a dash between the values.
- Plus and Minus Tolerancing. The plus and minus and value is placed between the dimension on the left and tolerance value on the right.
- Geometric Tolerances are applied within control frame to features.
Angle Tolerance
90° and 0° basic angles take on general tolerance of feature control frame.
Where center lines and surfaces are shown at right angles or parallel to each other 90° or 0° basic angles are implied. The tolerance on the feature associated with these implied angles is provided by feature control frames.
Tolerance Decimal Expression
Millimeter tolerances:
- Where a tolerance value is zero, a single zero used without a plus or minus sign.
- Use the same number of decimal places adding zeros as needed for bilateral and limit tolerancing.
- No trailing zeros are added to Basic dimensions.
Inch tolerances:
- Where a tolerance value is zero, the same number of decimal places are added to match.
- Use the same number of decimal places adding zeros as needed for bilateral and limit tolerancing.
- No trailing zeros are added to Basic dimensions.