Swiss Army knife edge. The blades are then checked with a laser reflecting goniometer to verify the angle of the cutting edges. Finally scales are applied. Slightly undersized holes incorporated into the inner surface enclose the bushings, which have truncated cone cross-section and are slightly undercut, forming a one-way interference fit when pressed into the generally softer and more elastic scale material. The result is a tight adhesive-free connection that nonetheless permits new identical-pattern scales to be quickly and easily applied. Victorinox models are available in , , , , , , and lengths when closed. The thickness of the knives varies depending
Swiss Army knife on the number of tool layers included. The models offer the most variety in tool configurations in the Victorinox model line with as many as 15 layers. Wenger models are available in , , , , and lengths when closed. Thickness varies depending on the number of tool layers included. The models offer the most variety in tool configurations in the Wenger model line, with as many as 10 layers. Since the first issue as personal equipment in 1891 the "Soldatenmesser" (Soldier Knives) issued by the Swiss Armed Forces have been revised several times. There are five different main "Modelle"