The basic metallurgy of solder. How to make a solder joint. How to repair a circuit board. The vintageTEK museum is a geek’s paradise to tour if visiting the Portland, Oregon area. The museum ...
Prominent among these are the Electric Telegraph, the Reaper and Mower, and the Sewing-Machine. What the telegraph is to the commercial world, the reaper to the agricultural, the sewing-machine is ...
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