The first was a water level. The bedrock was networked with narrow trenches, then filled with water. The waterline was marked on all the trench walls, the protrusions cut down, and the trenches re-filled with stone to create a level base. The second type of level was an A-frame with a plumb bob suspended from the apex. Since the Egyptians understood the isosceles triangle, stones could be cut and chiseled square, and mortared into place using this instrument.
Research continues to turn up new evidence of surveying in ancient Egypt.
There are but a few papyri, hierglyphi, and actual artifacts documenting the surveyors and builders of their world. The surveyor's tools of the trade had come through.