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spherik: Hewlett-Packard HP-5451A (Fourier Analyzer), 1972
tags: advertising,1972,1970s,tech,
from: https://monkeyday41.tumblr.com/post/114869660000
recommended: monkeyday41 tumblr, NSFW_Sources #l0st-fxck NSFW_Tributes l0veme-down NSFW_Tumblr