public override string ToString()
{
return String.Format("\n {0} \tx4\n {1} \tx2\n {2} \tx2\n {3}\tx1\n {4}\tx4\n {5}\tx4\n {6}\tx4\n {7}\tx1 \n", battens.ToString() , lrpanel.ToString() ,
udpanel.ToString() , backpanel.ToString() , fbcrossbar.ToString() , lrcrossbar.ToString() , anglebar.ToString() , door.ToString() );
}
