2 responses

  1. Glen Lees
    September 7, 2019

    With the presumably later invention of the Robertson ball-end screwdriver (by whom?), the Robertson screw became the only screw that I know of that can be driven or undriven readily at 20 to 25 degrees out of alignment. This was my favoured screw before I found these ball-end drivers, which although somewhat difficult to find, have cemented the Robertson screw as the only screw I’ll use when I have a choice.

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  2. John
    March 1, 2018

    And the Robertson screw, becomes the Betamax of fasteners.

    (for those that have forgotten, Beta was a technically better video tape standard, but due to licensing rules was dominated by the VHS standard from JVC — sound familiar?)

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