User's Manual and Brochure for P7000 series deadweight testers. These models had slightly better uncertainty specifications than other models like M2800. The high pressure oil models to 20000 psi (140 bar) have a taller mounting post and carrier tube than other models, and have a different carrier mass.
These models are no longer in production.
Current model are the P3100 and P3200 series deadweight testers.