Great little gadget.
Super space saving compared to a regular hinge for the track.Well thought through and practical to use.
Quality control could be better: both dogs had a pretty tough burr at the end of the set screw thread where the screw is supposed to pinch the height adjustment rod. I had to remove with my dremel tool.
Once in use very efficient and reasonable to set to a desired length, both for normal and narrow cuts. Quality of parts good though not perfect.one of the stop blocks had a dented corner I needed to file down so the narrow cut strip could be mounted cleanly.The calibration is a bit fiddly, mostly due to requiring multiple screws to be tightened without changing the setting ahain.
One wish regarding the user instruction: Best recommend or suggest using loctite threadlocker: Due to vibration from my tracksaw one of the set screws came loose and ended up in my shop vacuum.
Great quality and well made
Usefull and nice Tool - just what i was looking for a long time