Is this a first angle or third angle projection?

[Patrick Hughes]

Patrick,

Very nice illustration, makes things easy.

 

rkent

 

Thanks rkent, I contemplated putting a copyright mark on it.

 

Throughout my career I had never heard of that visualization technique until just a few years ago. It was taught to a colleague by his high school drafting teacher.

[JD Mather]

I had heard this description (in words) years ago and it didn't make sense to me (and because I do virtually all work in 3rd angle and can figure out 1st angle when needed) I ignored trying to figure it out.

Finally took a good look at your graphic - and it is great. I'm thinking of doing a animated version to use to explain to my students.

[Patrick Hughes]

Thanks JD, I'm glad you liked it. Let us know when you've got the animation done. I think it would make for a good instructional aid.

[Manila Wolf]

To explain the difference between 1st and 3rd angle projection to trainees in our office I show them the attached drawing.

 

Whether it's a view shown on the right or left has no bearing on wheter it's 1st or 3rd angle projection.

 

With regard to preference I think it's what you get used to. I am happy to work with either as essentially the views are exactly the same, just placed in a different part of the drawing. If asked to choose, my own preference is for 1st angle. If I draw a building elevation it makes sense to me to draw the plan below the elevation.

1st 3rd Angle.dwg