What's the difference between a plum screw and a cross screwdriver?
A screwdriver is a rotating screws to force the tools in place to twist, usually with a thin wedge head, the screw head can be inserted into the slot or recess, the Beijing Tianjin Hebei Jinyu and Shaanxi dialect called "screwdriver", Anhui, and Hubei, known as the "driver", said the central and Western regions "the knife", the Yangtze River Delta region known as the "screwdriver". The main word (minus) and cross (plus two). There are also commonly used six corner screwdriver, including six corners and six corners outside two.
The difference between plum knife and general cross screwdriver mainly is: plum the handle of the screwdriver with a metal rod penetrates through, such a solid construction, because the knife and the handle as a whole, through the bar through the rear of the handle, the rear force so that you can knock with a hammer knife, it will not damage the screwdriver. The disadvantage is that this tool can be used in electrical equipment operation, even if the switch off is not good, the price is slightly more expensive.
