> Steel ruler.
> Calibrated Engineers set square.
> Calibrated straight edge.
> Flash light.
> Feeler gauges.
> Radius gauges.
> Dial Test Indicator and block.
> Micrometer, both internal and external.
> Micrometer depth gauge.
> Knowledge and experience in how to effectively use
> all the above.
> All of which will fit into a small bag. Except for
> the knowledge and experience.
In fact it's the comparatively recent development of these methods and instruments along with the parallel development of mathematical principles that have enabled us to only recently identify these ancient micro anomalies in the first place.
Napoleons men and even Petrie (with the equipment he had to hand, he was a surveyor) wouldn't have had any way of recognising them. Although Petrie did loosely comment on some of them.
As far as I know Chriss Dunn was the first to fully recognise and quantify them. It could probably have been done in the mid, late 19th century but no-one bothered.
Now that this 'inexplicable engineering' has been identified and recognised the next step should be to employ even more modern and precise and expensive methods of measurement.
Edited 1 time(s). Last edit at 17-Apr-18 08:49 by Jon Ellison.