How to Use a Speed Square to Mark Angles, Rafters, Slope 

Even though I took trig and calculus decades ago, I recently decided to build a new shop. I am a retired physician. My roof pitch is 10/12 or 40 degrees so I thought my rakes and shingles would be cut on the gable end at 40 but no, Wrong! It was 50 degrees which puzzled me a bit but your demonstration clearly shows why I needed the complement of 40. Thanks for such a lucid presentation.

How come I didn't have a math teacher like you when I was in school I might have learned something. Many thanks and a great demo!

You’ve made more sense in a short amount of time than all those years of math. Plus, learned how to properly use a speed square. Thank you

Nice demo of the multiple uses of a speed square Mr. S! I love how you show how you use math in the adult world.

Well done. Thank you for the straight forward intro to the speed square. I have used one of these for a long time but only for 90's and 45's but now I'm building stuff that requires me to know angles and I knew the speed square and t-bevel guage we're going to be the necessary tools to master. Thank you for starting me down the road with a common sense approach in clear wording.

Incredibly informative and fascinating! Thanks!

Awesome. Answered so many question in a short video is great. Thanks

What an EXCELLENT tutorial. Thank you sir for your speed square math clarity!

Thank you for such an informative and interesting tutorial. If only I had math/shop teachers like you growing up!

Wow, I learned a lot in this 10min video. I have had a speed square for years and only used it for making straight cut lines. You are a great teacher thanks.

Your way of teaching is great I wish I had wood shop in my school but I have to make do with what I have and your videos, makes me feel better for what I need to know.

Thanks for your time doing this information. I know a little bit more than I new before. I am trying to work out the pitch on the gable in my shed.

Good basic explanation of a speed square. I own the same ones because of the white writing on the black background. So much easier to see than the basic aluminum ones that I used to use.

Very concise, useful instruction.

Thanks so much!!! Great explanation and thank you!!!

Great demo and explanation. I just bought this speed square and I am taking a pre-apprenticeship program at the local junior college. It's been a very long time since I took a math class...I like your style of teaching. Thank you!

Thanks for the lesson!

Amazing. I learned a ton

This was helpful and wholesome 💞

Good stuff! Thanks! Harbor Freight directed me here.

Very good sir. Thank you. From kenya

Awesome 👏 thanks

Thanks for your video😊

Great explanation

Great video.

i always sucked at math couldn't get fractions or above dont know why i just never could. Which sucks as i like the smell of fresh cut wood and would love to be able to build awesome an neat looking things be it tables, chairs, book shelfs, cabinets or even be able to build my own house/workshop/shed. i'll be sure to add this vid to my favs so that i can watch it again from time to time an maybe with enough watchings the knowledge you have shared will finally sink into this dang gum head of mine.

Easy to understand, it really complicated Me from others

Just subscribed love the videos

Thank you sir

Thanks so much.

Thank you, I need to put cross braces on the legs of my small catio. They need 45 degree angles.

Very informative! Thanks. I did notice that at 8:13 you said "1 1/2 over 12" when you meant "over 6".... I had to replay it a couple of times to make sure I wasn't hearing things. (BTW, you're liable to pick up a boatload more views because your video is linked to in a sales promotional email Harbor Freight just sent out. That's what brought me here.)

Thanks!

Outstanding

Great thanks. Frank

Thanks for sharing ! this best practice!!! Can you introduction product Links on Amazon for this rule product ? Thank you so much

Why weren't you my Geometry teacher in 1966? I would have done a lot better than a D. Thanks for you work bud

The speed square is the Leatherman of carpentry but question is can you determine rise/run, pitch, slope when you only have access to the bottom of the beam? How do you make the calculation without being able to bring the edge of the beam to the SS blade?

I'll watch it again until I master it.

What is the difference between angle and pitch and when to use it. I want to build a 2/12 gable awning. Thanks!

If you teach others how to work with an angle, try turning the angle once when cutting according to a 90-degree angle, so that the saw goes along the longer side of the angle right at the beginning. The cut will be much more accurate.

How do I find a 135 degree angle with speed square

I couldn’t help but notice your RU-vid name. Are you located in Colfax, CA?

Mine isn't quite like yours with all of the extra numbers and more modern things.

🙌

👌👌👌👌👌

Ok show us a combination square

I'm afraid my square is nothing like yours. It was made by Swanson Tool Co. Inc. Frankfort, IL. in 1987.

If its harbor freight, its NOT a Speed Square ™. Speed Square is a trademark name like Kleenex or Levi's or Crocs. Blue jeans are not necessarily Levi's if theyre made in China or a country ending in 'Stan'. A triangle ruler is not a Speed Square ™ if not made by the company of the inventor or a licensed manufacturer.

I wish to know math 😞

I bet you used it once and all the numbers wiped off and you had to throw it away and buy another. Not to mention that its not square to itself.

Nice demo of the multiple uses of a speed square Mr. S! I love how you show how you use math in the adult world.

Thanks!