visual alignment systems for precision mounting of fine pitch surface mounted components on a pre-printed circuit board comprising a PC board positioning table, an optical or electronic video viewing device, and a stationary beam splitter creating superimposed images, used in conjunction with a precision pivot arm carrying a placer head for installing surface mounted components, for use in the field of electronic chip mounting on PC boards

'align':2 'arm':48 'beam':36 'board':19,23,69 'carri':49 'chip':65 'circuit':18 'compon':12,57 'compris':20 'conjunct':43 'creat':38 'devic':32 'electron':29,64 'field':62 'fine':8 'head':52 'imag':40 'instal':54 'mount':6,11,56,66 'optic':27 'pc':22,68 'pitch':9 'pivot':47 'placer':51 'posit':24 'pre':16 'pre-print':15 'precis':5,46 'print':17 'splitter':37 'stationari':35 'superimpos':39 'surfac':10,55 'system':3 'tabl':25 'use':41,59 'video':30 'view':31 'visual':1

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