Apr. 1, 2015. TDK Corporation has announced that its Hong Kong-based HDD head manufacturing wholly owned subsidiary, SAE Magnetics (H.K.) Ltd.
You use a wrench to screw, or unscrew a bolt. A screwdriver is for screws. Either way you turn it left. Some bolts have reverse threads and would turn the other way to unbolt.
To adjust the vacuum advance on your distributor you adjust it by sticking a 3/32 allan in the vacuum port of the can. Right, clockwise turns provide more advance, left, counterclockwise take advance out.