Model 430 Schematic Diagram. . ,10 .11 COmiGHTO 1963 ElC page 2 430 3" refined through many years of continuous oscilloscope development work at EICO. For sale is reprint of EICO Model 430 3" General Purpose Oscilloscope Instruction Manual. Manual is 21 Pages long and includes 11"x17" pullout of circuit Instruction and construction manual . Eico Electronic Instrument Co. , Inc. Eico 430 general - purpose 3 " oscilloscope . Instruction book .Download Eico eico model 430 oscilloscope . Rare and Ancient Equipment Eico eico_model_430_oscilloscope.pdf ✓ Various electronics service manuals. THIS IS A MANUAL FOR THE EICO 430 OSCILLOSCOPE. very nice clear print, easy to read; steve smith 2014-03-22 20:06:51 Thank you for Eico 430 pdf.