Details
To find the length of the AN Bolt rotate the top disc of the computer until the material thickness is shown in the top selector window. To the left of the window find the AN Bolt diameters (AN-3 bolt is 3/16", AN-4 is 4/16" diameter etc.) Select the bolt length in the window opposite the desired bolt diameter to be used.
The selector window shows the proper length when using two thick flat washers. If two thin or one thick flat washer is used, reduce the bolt length one size. If material thickness is in 1/16", 1/32" or 1/64" round to the nearest 1/8".
Color-coded AN Bolt Gauge accurately measures AN Bolt sizes from 3/16” to 1/2” in diameter and up to 8” in length. Graphic instructions eliminate errors to help you quickly determine the correct bolt size. The conversion scales list fractions in increments of 1/16” from 0 to 1 inch (64 entries).
Alongside each fraction are the decimal and millimeter equivalents. The bottom of the conversion scales shows the mathematical formulae in one thousandths of an inch for converting millimeter to inches and inches to millimeters. Edges of the gauge has precision 8 inch and 20.5 centimeter scales.
