 What the heck is a delve square? Well, I would workers Paul crossing here at Small Workshop guy This is a delve square DEL ve a specific square with a lot of little measurements developed by a Woodworker in North Carolina by the name of Tom Del Vecchio. It's a speed square This is a speed square somewhat larger one. You're not going to carry this one in your apron or in your back pocket Here's a more normal size. I think it's six inch speed square That's even too large to carry in your apron Here's one from Veritas. It's a speed square or a roofing square and That they'll get lost in your apron So I'm not a real fan of that one. Not sure why I bought it just because it's from Veritas. I guess well these The delve squares are specifically designed with a lot of great features in them. What are those great features? This one is all aluminum. This one has some stainless steel This is three quarters of an inch wide precisely on both of these This is One quarter of an inch in depth here on this one This offset here is three eighths of an inch and this offset is One quarter of an inch And this is one eighth of an inch wide. Well, those are Measurements that you're using all the time and woodworking So having them all on one little device that also has Rulers on it on the outside edge engraved or laser cut with nice white So if you got better eyes and I do you can read it and this comes with a hole every eighth of an inch Along this edge and it comes with an internal ruler Inside of here if that's useful to you to mark off an inch or something So it's got a lot of different features built into it This one even has more in that it's got an offset here That's a quarter of an inch and then this full width is a half of an inch And then on the other side there's three eighths and thickness and then a half And so those are useful three quarters three eighths one quarter Just a lot of different measurements. I hope I hope I quoted all those right this one's all aluminum This one has some stainless steel on it This one could potentially get carved up over time if you're using a sharp marking knife And so if you're using a marking knife instead of a mechanical pencil, then you might want to have this model All right, if I had to do get one of these two I would get this one All right, let's let's talk about how it's useful The three eighths offset here Would be Good for marking the center of a three-quarter inch board So if I wanted to mark strike the center, I just put that three eighths offset there strike the center It should be perfect Normally you would strike it from the other side as well Because if your material is not exactly three quarters of an inch wide Then your center would be the middle of the two lines All right, so it's useful for marking the center of a three-quarter inch workpiece It's useful for marking out Like a tenon. Let's say you had a tenon and you wanted a three eighths inch Shoulder So put that up against there and Not having to measure anything. I already know it's three eighths and so There's my three eighths inch shoulder Now this is three quarters wide So I'd like to have a tenon be one third of that So one third for the cheek one third for the other cheek Well, where am I going to find a quarter right here? It's built in So if I want to mark that off And then I want to do a quarter from the other edge So now I got this tenon marked off I could run that over my table saw With a dado stack or whatever and and get that tenon or use a Tenon jig of some sort. Anyway, this shows you where to do your cuts And then if I wanted a mortise hold that down there and flush up against it three eighths measure the distance for the other one lay that out the cheek And the other cheek and that would give me my mortise All right now It can be used to mark Obviously mark or set something at 45 degrees. Here's a perfect 45 degrees So I can just put that up against there. They've designed it So this point is right at the edge of your workpiece And you can strike your 45 degree angle Maybe I want some other angle. So it's got angular marks on here You would Learn how to use it that way So let's say I wanted a Say I wanted to have An angle from here. So I put this apex point on there Rotate this down to the angle I want here would be 10 degrees Here would be 20 degrees. You can see I'm lining it up right there so Hold that down and strike my angle and that would be 20 degrees from this Straight line across the board in addition If I've got a mark like this, I can use it to carry that mark down. So put your pencil on the line Move up to it and you can mark down the other side All right, or you can do it this way put your pencil on the line mark up to it And then strike down you can carry that all the way around That it's just the perfect size And the perfect functionality. Oh, there's one thing I didn't discuss This hole right here that's been engraved in there is designed to give you the center Of a three-quarter inch stock It's a guide hole for for drilling So if you put yourself centering bit There and drill down you would get that right in the middle of that board And just keep moving along so perfect guide for getting holes drilled In the exact center of a three-quarter inch stock Be a great addition to your apron Pull it out learn to use it It'll save you a lot of time once you get through the education curve and you keep remembering That you've got it in your pocket So you don't need to go get some setup bars for a lot of the things that you might otherwise Want setup bars for that's the delve square highly recommend it available from wood pickers I'll put a link down below If it's available from amazon They're not inexpensive But you'll love it. Give me a like Give me a subscription and please comment that helps out the old coot's analytics If you didn't like the video go ahead and tell me Doubly tell me that you didn't like it hit the thumbs down button twice and always remember You can't stop the waves But you can learn to serve small workshop guy signing off