Screw Pitch Gauge/Thread 4 to 62 TPI, 0.25 to 6.0 mm Combination with 55 Degree and Metric 60 Degree 52 Leaves , Narrow design
Screw Thread Cutting Gauge Combined threading tool gauge for ACME 14-1/2" and angular threads 47-1/2", 55, 60 Degree It is Used For Checking Tool Angles Acme Thread BA Thread
Twist Drill Gauge Acute Angle of 118? Upto 2" (50 Mm) Diameter degree drill bit sharpening angle, ideal for front edge measuring. Suitable for professional and personal use.
The drill bit edge dimension is divided into 1mm from 0 to 20.mm