The unit arrived exactly as described in the picture Edelbrock 4025. I received it today and have already successfully synchronized my 2 carburettors (34 PDSIT2/3) on my 72ft VW bus. It lacks the build quality of my English original that I had in the 80's, but it works just as well. The gauge tube is plastic in a cast metal (zinc?) column. Obviously, in use, the column must be folded vertically. It folds conveniently for storage in a cheap paper box and bubble wrap.