Impact driver (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Impact driver" in English language version.

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dww.com

  • "Canadian Inventions – The Robertson Screwdriver System (Peter Robertson)". Millions of craft workers are thankful to Canadian Peter Robertson for inventing the square-head screw that bears his name. The Robertson screw represented a significant advance in the history of fasteners for two practical reasons: it is self-centering (that is, the screw is almost impossible to be driven off-centre because of the indented squared notch into which the screwdriver fits snugly) and the screw can be driven with only one hand.

popularmechanics.com

wwgoa.com

  • Mayer, Paul. "Impact Driver - Do I really need an Impact Driver?". Woodworkers Guild Of America. Retrieved 2015-09-21.