What distinguishes the Phillips screwdriver from the Reed and Prince type?

The distinction between the Phillips screwdriver and the Reed and Prince type lies primarily in the angle of the tip flukes. Phillips screwdrivers feature a tip with a distinctive cross shape and flukes that are designed at a 45-degree angle to the handle. This design allows for better engagement with the screw, providing a cam-out feature that helps to prevent stripping when maximum torque is applied.

In contrast, the Reed and Prince type, also known as the PoziDrive, has a similar cross shape but the angle of the tip flukes is designed differently to increase control and reduce the likelihood of slipping off the screw head. This design is intended to provide incremental benefits in grip and torque, making it more suited for certain applications.

While factors such as the depth of the tip, length of the handle, and material are important in the overall functionality and durability of the screwdriver, they do not define the essential difference in the design mechanics between these two types of screwdrivers. Understanding these design variations allows users to select the appropriate screwdriver for specific tasks, ensuring efficiency and reducing damage to both screws and screwdriver tips.