Christopher Dunn has written two books on this subject - his 'The Giza Power Plant' and 'Lost Technologies of Ancient Egypt' in which he goes into considerable detail with his examination. His background is that of an Aerospace Engineer who's knowledgeable about manufacturing today.
He cites passage alignment within the Great Pyramid to within 0.2 of an inch whereas modern buildings today are within 0.5 of an inch. Flinders Petrie noted this also with specific examples and was puzzled by a particular tubular drill core which showed a spiral groove present. This is highlighted in a video on this subject at UnchartedX.com on Youtube. Their videos are a must watch. It's pointed out there - how Mark Lehner tried to show how tubular drill cores are made by manual labor - however he just fudges it. Does an unconvincing demonstration for Nova? He couldn't break it off, when finished and had to resort to cheating to do so. Use a bit of iron. He couldn't reproduce spiral grooves. Spiral grooves could only be done via advanced technology because of the feed rate required to do so. Dunn also points out how with a Ramses statue face - how odd it is that it is so symmetrical - that the right hand side mirrors the left exactly. So precisely that it had to be machined to achieve this symmetry.
UnchartedX.com points out the incredibly sculptured black granite statues - how incredible finely done they are made - and to note specially that if hieroglyphs are present on it - look very carefully to see if it precisely carved out - and not crudely done. If it is crudely carved and rough in appearance - that surely this was not done by the creator of the statue - but was added some time (maybe centuries?) afterwards. The person who carved it - by whatever means - if they also marked it with hieroglyphs - that surely it would have been done with the same care and attention to detail as the carving itself.
It does seem likely that the black granite statues were likely to have been 'ancient' in the time of the Middle Kingdom and later dynasties. That they were heirlooms - or antiques as such.
There are many videos on Youtube which point out examples of machining in stonework. These are literally lying around, waiting to be noticed. Many examples are broken pieces - showing straight edges or flat surfaces - or gentle smooth curves - which simply cannot have been done by hand, by manual labor. They would have to have been made with the use of advanced machinery. These examples are simply lying around - exposed to the elements.
The same kind of story is present in South America. Brien Foerster points these out in various Youtube videos. That the older civilisation had the advanced technology and later civilisations - did not. That is, the Mayan being older and more advanced - and the Aztecs - the later using crude manual labor. Brien points this out in wall examples, in which the lower is the more advanced, and the topmost layer the more primitive - the latest.
Another example in South America - are the enigmatic 'H' blocks of Puma Punku - no one now the true purpose of these scattered about - also some huge walls are present on this continent - that primitive people with their tools could not have built them.
