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Conventional Represeny, ati, , , , , , 3-4 aa, , ue length is given by giving it, ect and its true leng 8 oy,, a shown in Table oe: 2, , , , Mechanical Working Drawing, , , , , , , The conventional sections show the break in, ension. The conventional breaks for rod, shaft and pipe are, , Table 3.2 : Conventional break as per BIS, , , , , , Rectangular, Section, , Rectangular, , Section, (Wood), , I-Section or, rolled section, , 3.4 Ball and Roller Bearing, Pipe Joi ,, Threads : 9, Pipe Joints, Cocks, Valves, Internal and External, , , , Conventional representation is preferred in cases where, co, , unnecessary drawing time or space. The conventio :, (Refer Section 3.6). Pie for above obj, , mplete description of the part i, €cts are given in Table 3.3(a), (0). |, , 3.5 Convention of Section: ©, When a object is cut by an imaginary cutting plane, it is, 3.5.1 Hatching of Sections : Presented by section., , Hatching is used to show areas of sections, The simple fo, continuous thin lines at angle of 45° to the principal outlines, "™°hing is shown in Fig. 3.1 is