Roughing gauge used to speed up the roughing process and provide more accurate blanks. The gauge is made about 1/8th inch over finish peg dimension. Make the gauge as in the image with a pivot point to allow the gauge to fall past the peg when the blank is proper size. Make the gauge of hard wood with two pivot points using 4 penny finish nails. The gauge must fall freely and have little side play. When the blank is the proper diameter the gauge will fall and you are done. A gauge will save you time, when making many pegs as I am doing in this image. I will be turning more than 60 pegs.