 Let's talk about the Veritas dual marking gauges for mortise and tenons. Hola woodworkers, Paul Croson here, small workshop guy. I'm doing some triple tenons and they're going to be spiked and so these are the mortises on the end piece of the samurai carpenter workbench. What I need to do is transfer precise measurements and those need to get marked out here on the end of the apron. I can try to use my little Veritas L square and try to get a measurement and line that up and read it properly, but that relies on my reading it, that relies on my lining it up and that relies on me remembering what it is and transferring it and then marking it right in the right place. Well, I'm not that good. The beauty of these dual marking gauges is they have two arms on them with different connectors on the end of them. One of them designed to go on the inside, one reached the far outside here. So let me demonstrate. There are brass finger screws here and so I loosen those and there's the third one as well. One holds this rod, this one holds this rod and the third one holds the two rods relative to each other so things are less likely to move. So what I want to do is loosen everything, I got kind of tight here because I just used it, but loosen everything. Make sure I know that I'm referencing the top of this end piece and then referencing the top of my apron. So I've double checked that and so I just take this rod here and I move it till it pulls right back and you can feel it engage on the edge because it's got a little raised ridge and so it runs along that bar and catches the edge of your mortise. So I've got that one in place and I screw that down pretty tight because you don't want to slip when you're marking. Then I've got the other bar and I can push that until it hits the edge of the mortise and then I lock that down and then with those two there I lock them in relationship to each other. Again, I'm trying to avoid slipping. So I double check my alignment here. Now I've got that perfect, making sure you reference off the right side. We're only going to cut with one of these at a time so let's use the inside one. Get this Veritas gauge up against my workpiece, nice and secure and then I scribe a line. And by the way, these can get dull and so you can actually buy replacements and little bitty Allen wrench there, puts them on. So you mark that line. What I do is I scribe the line because this scribes and then I take my Graphgear 1000 5mm lead which is the finest that I have and I use that for my inkware devices and then I find I can move that right along in that groove and then that marks it for this old man's eyes. And then younger guys can probably get away by just using the scribe line and not having to mark it any darker. I want to continue this down the side so I pick one of these two to mark. Try to keep it consistent. Don't press too hard because that will make it harder to move it and sometimes you'll feel yourself that you didn't get a good accurate slide because you moved it so just try to do it again and make sure you mark which one is the right line. That's the way I would mark off this tenon to fit into this mortise, hopefully precisely. I hope that helps you understand these Veritas dual marking gauges for mortise and tenons better and I highly recommend them although they're not cheap. I've certainly had some others before but I like the two rods and I like to lock them in relationship to each other. And so the less expensive ones just don't work as well for me. Small workshop guy, I hope you found that helpful, siding off.