Parallel single scissor lift table is made with two single scissor lifts and operated by one hydraulic power pack to get both of them lifting/lowering together. This model is normally used in automotive production line (Jaguar) to handle the car-bodies or the final test procedure for tractors (John Deer). For this application, it's very important that the scissor lift table work in parallel. The tolerance between them is within 1% difference in stroke with the same load. The solution for this application is using a chamber cylinder or fluid divider.

http://www.marcoscissorlift.com/