div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=the-invention-of-the-slide-rule-5797518de2f79htmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: The Invention of the Slide Rule loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader030vdocumentsmxreader030viewer2022020405575067ab1a28ab0f07ac9838html5thumbnails1jpg width=140 height=200 divp© 1910 Nature Publishing Grouppdiv