Features: Crafted from steel, this precise thread gauge delivers corrosion resistant durability and industrial accuracy for M 3-18 screw measurement. Features double scale marking for thread pitches (P=0.5/0.7/0.8/1.0/1.25/1.5/1.75/2) and integrated measurement, ensuring versatilIitys functionality in mechanical applications. Ideal for professional technicians, industrial engineers, and automotive specialists requiring reliable analysis tool. Optimized for workshop environment like machine shops, manufacturing facilities, and equipment maintenance stations to verify screw specifications. Etched graduations provide instantly readability, minimizing measurement errors while handling threaded fasteners or cylindrical component. Specifications: Component:Steel Size:Approx.100x58.3x5mm/3.94x2.3x0.2inch Ranges:Approx.100mm, Accuracy:Approx.1mm Measuring Screw Models:M 3-18; Package Includes: 1pc Thread Gauge note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual item color.