Show wax comparatively few know that by the english admiralty orders perfect models are made in paraffin wax of every new battleship before it ie laid down and these models are tested in tank at caslar the models are from 12 feet to 24 feet long and tiro tank is feet long and 20 feet wido the models arc made of wai because it is a material which does not absorb water or change ita weight ato alterations can bo easily made also ibe material can bo melted ap and need again oar naval authorities also have models of all their constructed but these arc much more elaborate being conned of white pine and fitted with rudders fake L cels propeller shafta and all other necessary necea sary parts new york world |