The models works great for both offline renders and real time rendering such as in game engines.
Mesh Objects: All the models are divided into multiple mesh object that are clearly named.
Origin, Rotation, scale and position: The origin, rotation and positon are all at 0,0,0. The scale for all object are 1,1,1.
Native file format: All the models are originally modeled in blender and the .blend format.
All previews were rendered using the cycles rendering engine.
Real world scale: All the models are made with real world scales to ensure that they look like the real thing as well as being easily adapted to a wide variety of project needs.