div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document2009-05-18-tial-pressure-gauges-mercury-remains-the-only-primary-standard-andhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: · 2009-05-18 · tial-pressure gauges Mercury remains the only primary standard and calibration against the mercury-filled McLeod gauge is limited to about 10-4 torr Overlapping loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsusreader033viewer20220419225e6c8b7fa7032e3d952eae29html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=document2009-05-18-tial-pressure-gauges-mercury-remains-the-only-primary-standard-andhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: · 2009-05-18 · tial-pressure gauges Mercury remains the only primary standard and calibration against the mercury-filled McLeod gauge is limited to about 10-4 torr Overlapping loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader033fdocumentsusreader033viewer20220419225e6c8b7fa7032e3d952eae29html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=document2009-05-18-tial-pressure-gauges-mercury-remains-the-only-primary-standard-andhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: · 2009-05-18 · tial-pressure gauges Mercury remains the only primary standard and calibration against the mercury-filled McLeod gauge is limited to about 10-4 torr Overlapping loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII=...