Downloaded from https://www.everyspec.com gap. It is the desigp engineer, knowing the functions of each component, who should do- tide upon the real requirements, and who should1 state them on the drawing in the form of sym- bols or notes. U all the requirements are stated - ._ E and none are Implied, the gage engineer cande- sign suitable gages to check the requirements _ without having any knowledge of the functioning of the components. Figure 5-28 shows the same part, in which the WRONG real requirements for the location and size of the small hole are st.ted. The basic dimension states the theoretically exact longitudinal loca- tion of the center of the hole.
The actual center may vary within a tolerance circle, 0.002 in di- ameter around the theoretically exact center, when the hole is produced to the minimum size. 0.X 5-27. Basic Angle Dimensioning. This system of dimensioning is explained in Drawing 30-1-7, and no further explanation is given in this sec- tion. However, the engineer should be aware of - S, u certain pitfalls in connection with the use of this M * O1 SEATING REQUIRED system. In figure 5, of Drawing 30-1-7, it is a important to note that the toleranced dimension 1.500 - 0.005 is specified to sharp corners. Figure 5-26. Applicatim of dependet symbol This is not a requirement for sharp corners on the part produced.
Since M[L-G-2550 specifies --. HOLE S- .600 I 1.1504ч .002 Figure 5-27. Implied requirement for cewtrality of smaL isoje Ss-23