Q: What is dimensioning what is general rules of dimensioning?

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Perimeter = The sum of the lengths of each side. There may be special rules applicable to selected shapes, but the above is the only general rule - in answer to the general question.

Rigth line

Logical inference.

Datum dimensioning is where a single reference point is used for all dimensions in a single direction. E.g. If Point A is declared the reference point, then Points B, C, D, etc, will all be measured relative to Point A, not to each other. Chain dimensioning is where each point is measured to the next. E.g. Point B is measured from Point A, Point C is measured from Point B, Point C is measured from Point B, and so on. The problem with chain dimensioning is that each measurement relies on the accuracy of the previous measurement. If there is a tolerance associated with each measurement (+/- X), then the tolerance for each subsequent dimension accumulates and becomes the number of measurements times the tolerance of each measurement (+/- n*X). Since datum dimensioning uses only one reference point, the tolerances cannot accumulate as each measurement is isolated, rather than relying on the accuracy of the previous measurement. Common practice is to only use datum dimensioning in design drawings to ensure greater accuracy over the entire design without requiring tighter tolerances.

Multi dimensions Or more easy using both metric and inches to represent dimensions

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Things like General Dimensioning and Auto Dimensioning

Things like General Dimensioning and Auto Dimensioning

Tabular dimensioning

Dimensioning standards are standards on how to dimension a working drawing.

So you can have the right measurement and dimensions. Also to make sure that the object is the right features as it should.

It show dimension of given dig. Ex. length meter etc. > chain dimensioning as opposed to datum dimensioning. chain dimensioning: 4 holes in line on a drawing, first hole position dimensioned from the edge, remainder dimensioned from the centre of the previous hole. datum dimensioning: all holes dimensioned from the edge. the cumulative tolerance build up on the chain dimensioning allows for greater overall tolerance build up.

Baseline dimensioning is a method of dimensioning in technical drawings where all dimensions are referenced from a single baseline, reducing the chance of errors due to accumulation of tolerances. It helps to maintain clarity and consistency in the layout of dimensions on a drawing.

General rules of constructing Frequency table General rules of constructing Frequency table

What is the difference between the conventional method of dimensioning and the baseline method of dimension

they are used by showing where it is

18" o.a.

All of the above are reasons for having general rules.