Identify with absolute precision every type of thread using the dual inch and millimeter thread gauge (252091489). It is the ideal tool for mechanics, turners, and technicians working with screws, nuts, and pipes, as it allows the immediate recognition of both metric and imperial (Inch/Whitworth) pitches. If you have ever struggled to find the right spare part or feared damaging a socket by using the wrong screw, this measuring instrument eliminates all doubt. It features multiple blades made of hardened steel with precise teeth that fit perfectly onto the thread, while the clear values marked on each blade facilitate quick reading even in workshop conditions. Its compact foldable design protects the blades from wear and makes it an essential item for every toolbox. Invest in a reliable measuring tool that ensures the accuracy of your work and prevents costly mistakes in mechanical and hydraulic applications.