This auction is for a set of six Gabb radial engine cylinder compression testers in their original box (model CG100A). They date back to the time of the second world war and appear to be in excellent shape, but show the signs of wear you would expect with normal use. For example, some of the text has worn of the labels and the box has some scratches and chipping. Also includes a small instructions page that was stored underneath the removable holder at the bottom of the box. See photos for condition and please feel free to message me with any questions you may have.