A general purpose file used primarily for working on flat surfaces. Parallel in width and tapered in thickness.
One edge is safe. Measurements given are at the thickest point of the file.
Glardon Vallorbe® Swiss Made Precision Files are measured from the point where the teeth begin to the end of the file.
A 10" precision file will measure 12-3/4" long from tip to end of tang, but it is called a 10" file.