Show Anti-Aircraft Anti Fire Control The Tue anny army officer assigned to the anti aircraft artillery hn has hitherto been regarded b by his comrades of the line lineas as a n mathematical r prodigy with head beach full of figures formulas and and m mystic symbols Now 10 appears a mechanical his apparatus prepared to do 10 most of calculating for him sas sags the Popular Mechanics magazine in an Illustrated board hangs article Over a a terrain In exact object which Is moved mOVel an correspondence with the lie OI flight ht of the this object hostile air ern craft ft From rom of down to positions down stretch cords s cor friendly batteries and anti searchlights Here the cords winch on 1 registering drums to show In yards f from station to the tar targe target et Sim I art jr each ach searchlight station Is Isa s sn each gun un or s at quadrant permitting the thenn vertical n a to be read rend at a nn angle le of elevation fl glance |