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of fin marks Extend these lines 127 mm 5 along the tube Draw a line the full length of the tube loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader042vdocumentinreader042viewer20220409045e78b62650e57b621629b35fhtml5thumbnails3jpg width=140 height=200 adivdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imagea href=https:reader042vdocumentinreader042viewer20220409045e78b62650e57b621629b35fhtml5page4jpg target=_blank img data-url=d-using-a-door-frame-as-a-guide-draw-straight-lines-connecting-each-pair-of-finhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: · D Using a door frame as a guide draw straight lines connecting each pair of fin marks Extend these lines 127 mm 5 along the tube Draw a line the full length of the tube loading=lazy 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