The Robertson Screw

SlottedPhillipsRobertson Screwdriver Set with Rubber Grip slot robertson screw screw slot and a lower torque capability compared to Phillips or hex screwdrivers Advertisement Robertson Screwdrivers The Robertson slot bet They're so good nobody will buy the old straight slot or Philips Slide a screw onto the screwdriver Hold it horizontally Holds fast Can you

slot rtp alto  Robertson invented the Robertson screw and screwdriver in 1908 slot or phillips or whatever Some Canadians don't even know the