How much rock do you cut away before you check?
How do you know how much rock to cut away, you cannot project a line into solid rock.
What is your datum?
You cut some rock away check with the straight edge and square, You've overcut , what do you do glue some rock back in there?
The length of the straight edge is hugely important.
Try this.. take a one foot ruler .. Draw a straight line one foot long. Slide the ruler along six inches, draw another line repeat fifty times. How straight is the 25 foot line. That's cumulative error.
I think this is the whole point. Many egyptologists with virtually zero understanding of engineering techniques grossly underestimate what is necessary to achieve an end result.
I don't know how to make shoes. If I need shoes I go ask a shoemaker. Shoemakers know everything there is to know about making shoes. I know nothing about making shoes. I have a great deal of respect for shoemakers.
Edited 1 time(s). Last edit at 13-Feb-16 20:00 by Jon Ellison.