Sorting of models

• Models are on separate layers
• Models are placed close to center
• Models are true-to-scale
• Logicaly named

Appending models

• Open your own .blend
• Go to File > Append
• Go into models
• Select model you want to append

Materials

• Materials are leather and metal. There are two kinds of leather, but they differ only in color which is determined using color ramp. Color texture is turned into black/white and using color ramp you may do in any color you want. There are difuse, normal and spec textures included. The specularity map is heavily modified in node editor, but all you care about is the color ramp. Metal material is just basic - mixed difuse and glossy.
• Properly named