mid: 595
url: http://www.3dcafe.com/models/hourglas.zip
ref_url: http://www.3dcafe.com/asp/hou2_pic.asp
format: xthreexds 
pid: 28497
polygons: 38141
connected_components: 10
average_dihedral_angle: 0.122063
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.738049, ymax = 0.975, zmax = 0.738048
avg_depth: 2.050628
center: (0.382423,0.517757,0.381681)
scale: 0.805241
principle_axes: (-0.002003,0.999998,0.000495), (0.272143,0.001021,-0.962256), (0.962255,0.001793,0.272144)
principle_values: (0.122828,0.028218,0.027948)