9 all tolerances apply for the full length full width

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9. All tolerances apply for the full length, full width, and full depth of the feature unless otherwise specified. 12. for decimal inch tolerances, a zero is never placed before the decimal point for values less than 1 inch. 14. Two types of direct tolerancing methods are limit tolerancing and plus and minus tolerancing . 18. Angular units of measurement are specified either in degrees and decimal parts of a degree or degrees, minutes, and seconds . Chapter 3: 1. Form controls have no datum features.
2. Flatness is the most common form tolerance. 3. Orientation controls indicates an angular relationship with specified datum features. 4. Datum feature symbol is the symbol used to identify physical features of a part as a datum feature and should not be applied to centerlines, center planes, or axes. 11. feature control frame The position tolerance requires The axis of the controlled feature Must lie within a cylindrical tolerance zone .010 in diameter At maximum material condition (MMC) 20. A theoretically exact dimension is called a basic dimension 27. A feature of size with the maximum amount of material within the stated limits of size is called maximum material condition (MMC ).
Pertains to Type of Tolerance Geometric Characteristics Symbol Individual feature only Form Straightness Flatness Circularity Cylindricity Individual feature or related features Profile Profile of a line Profile of a surface Related features Orientation Angularity Perpendicularity Parallelism Location Position Concentricity Symmetry Runout Circular runout Total runout Figure 3-36
Name Symbol Name Symbol All Around Free State Between ) Projected Tolerance Zone Number of Places X Tangent Plane CounterBore/Spotface $ Radius r Coutnersink % Radius, Controled c Depth/Deep ^ Sherical Radius Y Diameter Ø Spherical Diameter Z Dimension, Basic Square & Dimension, Reference (60) Statistical Tolerance S Dimension Origin ! Datum Target Arc Length Target Point Conical Taper @ Slope #

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