Mike
Sparkzy
Slide Rule at Grand Coulee Dam visitor center
Engineers were "real" men back in those days. Slide rules, logarithm tables, graph paper...
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Uploaded on September 9, 2011
Taken on September 5, 2011
Slide Rule at Grand Coulee Dam visitor center
Engineers were "real" men back in those days. Slide rules, logarithm tables, graph paper...
582
views
0
faves
0
comments
Uploaded on September 9, 2011
Taken on September 5, 2011