Tuesday, September 19, 2017

Mount Rushmore: Working Models

Gutzon needed smaller models during the carving processes.  And, over the years, he changed the models, as rock formations and cracks became more obvious.  These were in the visitor center and were about 2.5 feet high. 



I was most impressed with the very simplistic, and brilliant plumb bob and protractor method for converting measurements on the models to the mountain.   Essentially, using a protractor with a plumb bob on the model, measurements could be taken, and converted to the correct scale on the mountain.  It's brilliant.  And, it's been around for centuries.


Someone just needs to be lowered over the edge...to measure the distance to the eye...or bridge of the nose, etc.

SIMPLE!

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