Block · one region of the page, as the scanner read it. It may hold a whole story, part of one, several, or an advertisement; stitching blocks into articles is the next step. Text is supplied OCR.
Page 3 · column 2 of 8 · from the scan, no model involved
VALVr*OTATOR5 • .Keep exhaust valves at top efficiency and give V; up to 800% increase in ^ exhaust-valve life. ' v" iU
52.5%