Just a question whether the svg3 micron gauge can be calibrated. It seems to read higher than the cps brand at my work. I do not know which is correct.
The SVG3 cannot be calibrated outside of the factory. Not sure if the CPS version can be calibrated, maybe worth checking also. Re the readings, you should achieve a reading below 50 micron when connected directly onto a Vacuum Pump - generally less than 1 minute. If not check the seal & change if worn or scored etc. Apply some oil to help it seal better. Swivel should only be finger tight on the flare.