Show propellers tile take more time two and a half I 1 tima more in wan houis home are needed to make an aw air craft propeller than an automobile according to the automotive C council u for far we war production one reason it takes so much time two full days is that in the hub alone th there e are mote more than parts fitt fitted to together ether with watch like precision and for eacel part there are ar from to machine operations operation when in bal ance the pound completed assembly can be moved by a puff of air |