Geometry breaking and line changing place

i have been struggling wih this problem on this expecific project, all the geomatry is breaking and changing shapes as i zoom, i cant create new line because they keep breaking, can anyone help me? i tryed to scale up but but i cant scale any higher because i will not be able to render the image on the 3d render program. and every time i save the file and open it back it gets worst.

Something is too far from origin or is too big.

thanks! after zooming out for a bit i found a mesurment line way outside the area i was working with and i deleted it! and keeped zooming back just to make shure nothing escapes. then i saved file and reopened it and it was good! thank you alot!!!