mid: 1733
url: http://www.3dcafe.com/models/stairway2.zip
ref_url: http://www.3dcafe.com/asp/hou3_pic.asp
format: 3ds 
pid: 27694
polygons: 2988
connected_components: 3
average_dihedral_angle: 0.779417
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.975, ymax = 0.550227, zmax = 0.496516
avg_depth: 1.202323
center: (0.496293,0.181606,0.236416)
scale: 0.524897
principle_axes: (0.998603,-0.020210,-0.048823), (-0.036768,0.397841,-0.916717), (0.037950,0.917232,0.396542)
principle_values: (0.052136,0.015982,0.007895)