14″ Overlay Charts

Four Magnification – 360 Radius

Item Number 10X 20X 50X 100X 40-373-3 0.010″ 0.005″ 0.002″ 0.001″ 0.20 mm 0.10 mm 0.04 mm 0.02 mm

Four Magnification – Radius & Angle (15, 30, 45, 60 & 75)

Item Number 10X 20X 50X 100X 40-369-1 0.005″ 0.0025″ 0.001″ 0.0005″ 0.20 mm 0.10 mm 0.04 mm 0.02 mm

10X Thread Form Overlay Chart – 40-371-7

• American National Basic Thread Format
• For checking thread angles, root crest-forms and depth, from 4 to 80 pitch threads

Combination Radius & Grid Charts

• Clear, transparent Mylar charts are photo-etched and dyed
• Width of lines varies between .004″ and .006″

Item Number Description Magnification Increments 40-368-3 Combo, Radius & Grid 10x 0.005″ 40-374-1 Combo, Radius & Grid 20x 0.002″ 40-370-9 Standard Grid Chart 10x 0.010″ 40-375-8 Standard Grid Chart 20x 0.005″ 40-372-5 Combo,Radius & Angle 10x 0.010″ 40-380-8 Combo,Radius & Angle 20x 0.005″