 So we were talking about tolerances on this Roy Barak lock. Probably post this separately, but I thought I'd show you just how I've been measuring these things. A couple different ways. I recently got these, they're called I think spring gauges or plug gauges, and the way they work is they have little springs, little springy bits here, and then a little pin that tightens them so it gets into a certain diameter that you want to measure. You push them in and then you can use a micrometer or a caliper to measure them. So, or to measure the distance. So what you do, let's see if I can get this so you can actually see it. Here we go. So what you do is you put them in, say this plug of this lock, and this one is just like on the brink of being the right size. And you kind of tighten the the nut down and you kind of rock it around so that you're getting the, so that it ends up setting at the maximum or minimum diameter rather. And then once you're happy with it, you tighten that down well. Now I've got the inner diameter of the plug set on this little gauge. Okay, and then I have several options among them using my, this little micrometer which we've seen before, this little spring thing, and there's that 5135 I was talking about before. And goodness it came out the same. You could also use your calipers if you have a set of calipers. Oops. Do the same type of thing. Put it in there. You want to make sure you use about the same amount of tension as you did when you measured it. That's coming out 5130, so little disagreement there. But anyhow. So that was the measurement. Now the thing I wanted to point out is that if I measure this plug across, it's sort of the main diameter where it's round everywhere. I get that 5055, which is what I had before, 505. You can see the read out there. 505. If I however turn it and measure where the shear line is, which you notice is milled flat a little bit there, I get 5010, or 505, almost exactly 5, or 21.7, or 12.71 mil. Now if I take this and zero the micrometer and then rotate to the other place I was measuring, that's another 5,000, or 1,300 of a mil. And then if I add that to the distance that we already had, five thousandths, we had 0.0085. That would give us 13 and a half thousandths. That's over a tenth of an inch. I'm sorry, a hundredth of an inch. Just quite a, actually quite a lot. And 0015. Come on. Let's be generous. There we go. It's 0.29 mil. So it's that distance. I don't know if you can see that on the micrometer, on the caliper, but that's about the distance we're talking about. And that doesn't look very big, but when you think that the differs on a lock between the pin heights are often on the range of 15 to 20 thousandths, it's basically an entire differ worth of gap in the shear line. And that would account for some of the false setting type of behavior that I thought I was seeing, as well as just general sloppiness and ease of picking. So anyhow, these little plug gauges are kind of cool. You probably don't really need one, but if you happen to see some on eBay inexpensively, you know, these were from a set that belonged to some machinist who's probably long dead. These are sterret, but a bunch of different brands out there. They're kind of fun to have. They come in a set. It's like this. This one has seen better days. But yeah, so you can get all sorts of different diameters of things. So kind of handy to have on hand if you are doing any kind of precision work. And then you always want to make sure you store them with the nut loosens so that you don't wear out the springs. So anyhow, but I think I got this set for like 20-25 bucks on eBay, which knew, I can't imagine how much it would be, but it's sterret and apparently it belonged to Clem back in the day. So anyway, thank you Clem for providing me with that. And thank you for watching and as always have fun and please keep it legal. Cheers.