Precision pitch gauge for identifying fractional (SAE) thread pitch on bolts, screws, nuts, and other threaded fasteners. Features 12 high-carbon steel blades covering the most common thread counts from 12 to 40 threads per inch.

• Measures 12-40 threads per inch (SAE)
• 12 precision-ground blades
• High-carbon steel construction for durability
• Measures both internal and external threads
• Compact folding design for easy storage
• Instructions included
• Made in Japan

Tip: Match the gauge blade to the thread by pressing it against the thread crests. When the blade sits flush with no light visible between the teeth, you have identified the correct pitch.