Pfeiffer Balzers TPH 520 Turbo Molecular High Vacuum Pump
A used Balzers TPH 520 from a beam line physics laboratory. No way to test, the rotor has some resistance but it turns. Appears to have a dent where it looks to have been dropped. Not clear if this will affect the seal. Also missing a rubber leg peg so it will tilt over if you are taking a photo of it on a table.