Those are handy jacks, limited in height only by stability and length of pipe. Interesting to see you used 1 1/4 inch pipe. I used some for a roller stand for a bugo (sp?) type welder at my bosses business. The pipe was just the right size for the scaffold casters that were sitting on the shelf in the tool room. I hope to post about it some time in the future sense I finally figured out the wi fi password at the business but do not know when I will be there next. The dump trailer needs some serious patching up so it shouldn't be long.
Eric