div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documenthome-environmental-protection-department-devices-a-ringelmann-chart-consistshtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Home Environmental Protection Department · devices A Ringelmann Chart consists of 4 squares with grids which denote shade I to shade 4 The darkness covered in each of these 4 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentsinreader035viewer20220712196054ec0685851e347c0a47bahtml5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documenthome-environmental-protection-department-devices-a-ringelmann-chart-consistshtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: Home Environmental Protection Department · devices A Ringelmann Chart consists of 4 squares with grids which denote shade I to shade 4 The darkness covered in each of these 4 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader035fdocumentsinreader035viewer20220712196054ec0685851e347c0a47bahtml5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documenthome-environmental-protection-department-devices-a-ringelmann-chart-consistshtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: Home Environmental Protection Department · devices A Ringelmann Chart consists of 4 squares with grids which denote shade I to shade 4 The darkness covered in each of these 4 loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...