Additional ways to identify the right screwdriver are as follows: 1. If the screwdriver tends to stand up unassisted when the point is put in the head of a vertical screw, it is probably the proper one. 2. The outline of the end of a Reed and Prince screwdriver is approximately a right angle, as seen in figure 1-50. 3. In general, Reed and Prince screws are used for airframe structural applications, while Phillips screws are found most often in component assemblies. Torq-Set Screws Torq-Set machine screws (offset cross-slot drive) have recently begun to appear in new equipment. The main advantage of the newer type is that more torque can be applied to its head while tightening or loosening than to any other screw of comparable size and material without damaging the head of the screw. Torq-Set machine screws are similar in appearance to the more familiar Phillips machine screws. Since a Phillips driver could easily damage a Torq-Set screwhead, making it difficult if not impossible to remove the screw even if the proper tool is later used, maintenance personnel should be alert to the differences (fig. 1-49) and make sure the proper tool is used. OFFSET SCREWDRIVERS An offset screwdriver (fig. 1-47) may be used where there is not sufficient vertical space for a standard or recessed screwdriver. Offset screwdrivers are constructed with one blade forged in line and another blade forged at right angles to the shank handle. Both blades are bent 90 degrees to the shank handle. By alternating ends, most screws can be seated or loosened even when the swinging space is very restricted. Offset screwdrivers are made for both standard and recessed-head screws. RATCHET SCREWDRIVER For fast, easy work, the ratchet screwdriver (fig. 1-47), is extremely convenient, as it can be used one-handed and does not require the bit to be lifted out of the slot after each turn. It may be fitted with either a standard-type bit or a special bit for recessed heads. The ratchet screwdriver is most commonly used by the woodworker for driving screws in soft wood. SAFETY Screwdrivers, like any other hand tool, are dangerous when not used properly. Therefore, the following safety precautions should always be followed: Never use a screwdriver to check an electrical circuit. Never try to turn a screwdriver with a pair of pliers. Do not hold work in your hand while using a screwdriver– if the point slips, it can cause a bad cut. Hold the work in a vise, with a clamp, or on a solid surface. If that is impossible, you will always be safe if you follow this rule: NEVER GET ANY PART OF YOUR BODY IN FRONT OF THE SCREWDRIVER BLADE TIP. That is a good safety rule for any sharp or pointed tool. PLIERS Pliers are made in many styles and sizes and are used to perform many different operations. Pliers are used for cutting purposes, as well as holding and gripping small articles in situations where it may be inconvenient or impossible to use hands. Figure 1-51 shows several different kinds. The combination pliers are handy for holding or bending flat or round stock. The long-nosed pliers are less rugged, and break easily if you use them on heavy jobs. Long-nosed pliers, commonly called needle-nose pliers, are especially useful for holding small objects in tight places and for making delicate adjustments. The round-nosed kind are handy when you need to crimp sheet metal or form a loop in a wire. The diagonal cutting pliers, commonly called "diagonals" or “dikes,”  are designed for cutting wire and cotter pins close to a flat surface and are especially useful in the electronic and electrical fields. The duckbill pliers are used extensively in aviation areas. 1-30