mid: 1634
url: http://www.3dcafe.com/models/helmet_w.zip
ref_url: http://www.3dcafe.com/asp/mil_pics.asp
format: 3ds 
pid: 28823
polygons: 11562
connected_components: 6
average_dihedral_angle: 0.177722
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.927438, ymax = 0.685583, zmax = 0.975
avg_depth: 2.045002
center: (0.478774,0.351010,0.465591)
scale: 0.713673
principle_axes: (-0.012721,-0.112403,-0.993581), (-0.999915,-0.001236,0.012942), (0.002683,-0.993662,0.112377)
principle_values: (0.070550,0.044744,0.019367)