Mechanical Engineering Drawing Workshop

Line Conventions ...

Line Conventions Kinds of lines (continuity)Continuous lineDashed lineLong-dashed dotted lineLong-dashed double-dotted line•Kin ...

kinds of linesthick continuous line visible line thin continuous line dimension lineprojection lineleader line thin dashed lineo ...

Thick continuous line Thin dashed line Thin long-dashed dotted line Thin freehand line Thin continuous line Line Conventions ...

Scales ...

Value of scales Line ConventionsKinds of scales endorsed scale Enlargement scale 50:1 20:1 10:1 5:1 2:1 Full scale 1:1 Reducti ...

Sectional views ...

Dimensions are omitted K-K J-J Cut by one plane Cutting plane Cutting plane ...

Dimensions are omitted Cut by two planes L Plane 1 Plane 2 ...

Dimensions are omitted A section of a symmetrical part ...

Dimensions are omitted Successive sections ...

Detail drawings ...

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Dimensioning ...

Description Symbol Usage diameter Put before dimensionφvalue of diameter. radius Put before dimensionRvalue of radius. spherical ...

Some dimensions are omitted ...

Dimensioning Dimensioning symbols Description Symbol Usage diameter Put before dimensionφvalue of diameter. radius Put before ...

Dimensions are omitted No arrow on thecenter point. ...

Dimensions are omitted ...

Dimensioning Dimensioning symbols Description Symbol Usage diameter Put before dimensionφvalue of diameter. radius Put before ...