![This old blueprint machine was the original "Blu-Ray" device. It's still in use! : r/mildlyinteresting This old blueprint machine was the original "Blu-Ray" device. It's still in use! : r/mildlyinteresting](https://i.redd.it/gfthwbwg6yp21.jpg)
This old blueprint machine was the original "Blu-Ray" device. It's still in use! : r/mildlyinteresting
![Vintage copy machines: See the kinds of old photocopiers that offices used to have - Click Americana Vintage copy machines: See the kinds of old photocopiers that offices used to have - Click Americana](https://clickamericana.com/wp-content/uploads/Vintage-Apeco-UniMatic-Auto-Stat-copying-machine-1960.jpg)
Vintage copy machines: See the kinds of old photocopiers that offices used to have - Click Americana
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![Amazon.com: Historic Pictoric : Blueprint Copy Lathe: Top, Side View, End View, Section A-A, Section B-B, Section C-C, Section D-D - Ben Thresher's Mill, State Aid No. 1, Barnet, Caledonia County, VT Amazon.com: Historic Pictoric : Blueprint Copy Lathe: Top, Side View, End View, Section A-A, Section B-B, Section C-C, Section D-D - Ben Thresher's Mill, State Aid No. 1, Barnet, Caledonia County, VT](https://m.media-amazon.com/images/I/718izwoqK9L._AC_UF894,1000_QL80_.jpg)