RE: Phillips screwdriver

["Randall" <ryoung@navcomtech.com>]

> And according to my AACA judging guide, no Phillips head screws
> were used in
> factory cars until 1935.  "FT"

Phillips head screws were a "mass production" improvement, made it easier
for workers to get the screwdriver engaged with the screw.  "Posi-drive" was
a further improvement (and is frequently mistaken for Phillips).

Randall

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