301 TESTING MARGINS. To test the width of the Tails. — Open the sheet the contrary way to that in which it has been opened to test the backs, then measure from the foot of the third page to … the foot of the first page ; the distance should be the exact length of the paper. These directions apply to any forme, but it may be well to recapitulate them as applied to a half-sheet 12mo, as on page 295.
Printing · Color printing
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