Dimensions Given for a Drawing Have Diff Dimensions from Diffrent Views-

[Anonymous]

Hi,

My class was given a drawing to replicate. I printed out the PDF given, the figure is not true to size but

what puzzles me is that the base from the top view has a different length on the short edge than the

view of the drawing from the side. The side view is 1/4 inch longer, how can that be? The top view gives the length

from the center of a circle to the short edge as one inch, the mirror view looks identical and there is no way for me to be sure,

would a teacher deliberately give students drawings that aren't correct? I don't know what it is I am drawing, I am not a mechanical

engineer which makes this even more difficult.

Thanks,

CK

[brendan.henderson]

Welcome to the forum.

This is the exact purpose of a properly laid out drawing. It is to remove the assumptions you have made. You say that "the mirror view looks identical" = assumption. The end view clearly shows that the base is 2 1/4" wide, regardless of you thinking that because the holes are 1" from 1 side they should be 1" from the other side = assumption.

[BeKirra]

Obviously there are some dimensions are missing. However in your excercise you are asked to replicate the model from the drawing.

You can measure the dimensions by scaling the drawing. You don't have to create the model with 100% acuate.

HTH

[IgorMir]

Yes, that the recipe for a disaster - that's for sure. Such a "practice" then becomes accepted as a norm in the future. And then - everyone involved with the project will be busy flat out blaming each other for the total mess created!

Regards,

Igor.

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@BeKirra wrote:

Obviously there are some dimensions are missing. However in your excercise you are asked to replicate the model from the drawing.

You can measure the dimensions by scaling the drawing. You don't have to create the model with 100% acuate.

HTH

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