mid: 1432
url: http://www.worldwar1.com/vrml/objects/petard.wrl
ref_url: http://www.worldwar1.com/vrml.htm
format: wrl 
pid: 1719
polygons: 822
connected_components: 41
average_dihedral_angle: 0.981337
bounding_box: xmin = 0.025, ymin = 0.025, zmin = 0.025, xmax = 0.975, ymax = 0.262155, zmax = 0.119449
avg_depth: 1.583794
center: (0.476546,0.054710,0.072229)
scale: 0.416287
principle_axes: (-0.999648,0.026543,-0.000003), (0.000268,0.010190,0.999948), (0.026542,0.999596,-0.010194)
principle_values: (0.056309,0.000710,0.000687)