Kristeel Shinwa ACME Screw Pitch Gauge 29 Degree Thread Angle 16 Blades 1N to 12N Made By Kristeel Shinwa Made In India Kristeel Shinwa ACME Screw Pitch Gauge I 29 Degree Thread Angle 16 Blades 1N to 12N I Made In India Threads per Inch Range: 1 - 12 Number of Leaves: 16 Threads Per Inch: 1; 1-1/3; 1-1/2; 1-3/4; 2; 2-1/2; 3; 3-1/2; 4; 5; 6; 7; 8; 9; 10; 12 Thread Angle (Degrees) 29.00 Material: Stainless Steel - PLZ SEE PICTURE FOR MORE INFORMATION.