Useful for so much more than marking mortices and tenons, this superb solid brass twin stem gauge from Quangsheng has a couple of very useful features.
The bridle at the back is designed to hold the setting of the cutters relative to each other while the fence is adjusted independently.
Thanks to the clever shape of the casting, this one can also be used ahead of the fence to stabilize the bars for cutting marks further in from the edge. In the horizontal position the cutters won’t engage – rotate into the vertical position and the thinner wall of the saddle casting lowers the cutter into the work. A very controlled way to lay difficult marks.
With both cutters set to an equal distance and the bridle locked, you can use it as a standard marking gauge but with the option for which side you would like the bevel on.
For a tool that is produced in volume, the standard of design, ease of use and overall finish on this gauge is remarkable. Functionally the quality is everything I would expect from a bespoke toolmaker, the finish isn’t quite to that exquisite level but it certainly isn’t far off it.