mid: 1072
url: http://www.3dcafe.com/models/birch02.zip
ref_url: http://www.3dcafe.com/asp/plt_pics.asp
format: 3ds 
pid: 29075
polygons: 1296
connected_components: 65
average_dihedral_angle: 0.82018
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.477147, ymax = 0.975, zmax = 0.538707
avg_depth: 1.220740
center: (0.308196,0.575064,0.257074)
scale: 0.482399
principle_axes: (-0.062627,0.997066,-0.044005), (0.212758,0.056415,0.975475), (0.975096,0.051729,-0.215667)
principle_values: (0.055337,0.010521,0.005493)