div class=ts-pagebutton class=gotoPage data-page=1Page 1button div class=ts-imageimg data-url=instruments-of-precision-at-the-paris-exhibitionhtmlpage=1 data-page=1 class=ts-thumb lazyload alt=Page 1: Instruments of Precision at the Paris Exhibition loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader036vdocumentsnetreader036viewer2022080320575067a01a28ab0f07ac6936html5thumbnails1jpg width=140 height=200 divp© 1900 Nature Publishing Grouppdiv