bring images to scale

[tele5palla]

Hello everyone, I ask your help for a job I have to do for the university.
I have to recreate a tubular frame of motion starting from some photographs. I have aligned quotas and distances from the symmetry plane of the welding points. the prof authorized me to use the photos as if they were perfect projections. so I have to recalculate the photo by autocad and then by means of the depth quotas check the aligned quotas.
in the photo there is also a segnent of known length, which must serve me for the scale. I would now like autocad to point out the 1:1 scale odds also because then I need the spatial coordinates of the points to continue the work.
I hope I've explained and thank you for your help.

 

[Albertuan]

1) insert the photo ... insert image raster, etc ...
2) then scale with reference option giving, as reference the initial and final points of the known segment and the known quantity.

This way you should have a picture in scale.

note well: I hope you have reference points and measures to be detected not "sghembe". this is a simple two-dimensional detection method, certainly not 3d !!!

 

[tele5palla]

Thank you.
I don't know how to do point 2.
Hi.

 

[lattu]

command scale
select the object to scale
set the base point
type r
sending
click on the extreme points of the known segment
insert the value of the segment
Sending.