Screw Drivers

Screw Drivers Points : wiring tools screw drivers, definition It is the most important tool and is used more often than any other tool. The screw drivers are available in different blade sizes, but commonly a 25 cm. Screw driver with 15 cm. Blade is a standard one which can be sued to meet different types of jobs. Such a screw driver is shown in Fig. In addition to this, a similar screw driver with thin blade in Fig is use for screwing or unscrewing the small screws of switches, lamp holders etc. in some cases a square blade screw driver may be required, to augment had pressure. Such a screw driver is shown in Fig.