| 摘要 |
Alignment of multiple images for photographing, especially microfilming where one image is variable in centering and in width, and an assembled, magnified image of spaced indicia are view for judging the degree and nature of misalignment. A computer output microfilm device is shown employing a cathode ray tube display of alphanumeric characters superimposed on projected forms overlay or hard copy. Manipulation of X, Y deflection and gain of the cathode ray tube is made simple by viewing a magnified, assembled image of spaced indicia carried by the cathode ray tube and the other display. Preferably the rays of the indicia cross before reaching the eyepiece, matching the directions of viewed misalignment with the needed corrections.
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