I am looking for a mechanism that would allow me to support a fixture attached to a 3-axis motorized stage. I have attached a picture of my current design. I trying to design/incorporate some sort of hardware that will support the green fixture to travel in the z-axis as the grey stage moves during its analysis procedure. I originally tried a lab top scissor lift but that requires me to manually adjust the stage. I was thinking of a gas spring platform but wasn't sure how to incorporate it properly. Any ideas?