This is a pump serviced in 2011, after working for a few months, and never was used again due to design change. It is working well and starts working from atmospheric pressure, as you can see on the attached pictures. Please do not hesitate to ask me any questions. The item “Pfeiffer Turbomolecular Pump TMH 071 P + TC100 Controller in Excellent Condition” is in sale since Thursday, October 4, 2018. This item is in the category “Business & Industrial\Hydraulics, Pneumatics, Pumps & Plumbing\Pumps & Pump Accessories\Vacuum Pumps\Turbomolecular Pumps”. The seller is “us_kole” and is located in San Diego, California. This item can be shipped to United States.