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 and steel can also be filed and cut. Although red Cellulose Acetate Butyrate (CAB) (generally known trade names are Cellidor, Tenite and Tenex) scaled Swiss Army Knives are most common, there are many colors and alternative materials like nylon and aluminum for the scales available. Many textures, colors and shapes now appear in the Swiss Army Knife. Since 2006 the scales on some knife models can have textured rubber non-slip inlays incorporated, intended for sufficient grip with moist or wet hands. A modding community has also developed from professionally-produced custom models combining novel materials, colors, finishes and occasionally new tools