My Dad showed me how to use his Keuffel & Esser slide rule when I was a kid. After he passed, I found the manual. Still have both, so I can still Engineer when California shuts-off the electricity.

@sliderulesandmathematics9232

4 ай бұрын

I'll tell you I like that KE manual. Working through it again now.

I majored in electrical engineering (1966-1970) and used an Aristo-MultiLog throughout. I found it to be a fine rule with a few special features regarding conversions. It also was fitted with rubber feet so it wouldn't slide off and inclined drawing board. Finally bought a calculator in 1972 but continued to carry my slide rule as a backup. I still have it and the original manual.

Hi! I retired 12 years ago and went back to school for fun. I picked up an N3 in great shape. Then I ran across the beast of them all, an FC 2/83 N, brand new on FC's site, with the German paperwork. I also snagged the 157/87 student slipstick from FC. I'd use them every once in a while in classes while telling the young, aspiring engineers, physicists, and mathematicians, "You know, our guys in '69 got to the moon and back using these to doublecheck the figures the computer gave them!" I'd bet those kids beers that my slipsticks were faster than their calculators in a lot of instances. Ah, fun times.

@sliderulesandmathematics9232

4 ай бұрын

I am heading back to school myself to teach math and physics on the high school level. I am revising the entire slide rule series and just put up 4 new videos.

@sliderulesandmathematics9232

4 ай бұрын

BTW, I have a 2/83 and a Fuller Calc, along with an n-3 and a 7 foot classroom demonstrator will arrive this week.

@timberwolf7341

4 ай бұрын

@@sliderulesandmathematics9232 What used to get the kids is cube roots and such. The TI-84 is slow at those. HS math and physics? Those were fun classes for me. Oh, if you haven't seen what Khan Academy has nowadays, check it out. Your kids who hit a wall here and there can benefit from that site. In closing, I'd better check out what you posted. An unused skill is a lost skill, correct? *grins*

@timberwolf7341

4 ай бұрын

@@sliderulesandmathematics9232 Nice. A 7 foot demo rule? I hope you have a pickup! I was looking at 6 inchers here and there, but between the garbage and the overpriced stuff, I'm holding back. Have a great week. I'll be doing exterior ballistics testing once it warms up in a day or two. *winks*

@sliderulesandmathematics9232

4 ай бұрын

Absolutely. Love khan

Great video. It makes me want to use my old Post Versalog again (after many, many years).

I have that big Pickett model in yellow- I started college with it.

Very good, enjoyed the video! I was going to say that I have four slide rules, but when you mentioned the E6B, well, I have one of those also, so I guess I'm up to five. Just a few days ago I pulled out a couple of mine and started to get familiar with them again, just for the mental exercise. They're great computational tools! Back in "my day," the great debate between engineering students was Post versus Pickett -- sort of a Ford v. Chevy thing. (I'm a Post guy mostly, but have one Pickett also.) Circular slide rules are in interesting topic! We had one guy in our physics classes who used a circular. One day the professor was working through a problem at the board and said, "Somebody hand me their slide rule." Jan volunteered his Pickett circular. The prof fumbled around for a bit and finally said, "Gah!" and handed it back. 😆 They're great once you get used to them, but at first they can be baffling.

Loving every bit of yjis womderful instrument. thank. YOU. for a wonderful presentation !!

My grandfather (civil) gave me (mechanical) his old K+E. I’m trying to learn how to use it

Dear friend: First of all, congratulate you for your channel, since even though you are younger than you, and in class we already used the calculator, in my case the hp programmable one, I have always been passionate about the topic of slide rules. In particular those intended for engineering. Little by little I am watching your videos that I find extremely interesting. Greetings.

@sliderulesandmathematics9232

Жыл бұрын

Thank you!

My slide rule is a Dietzgen N1733 which I inherited from my Dad 15 years ago. He was a Civil Engineer. I pulled it off the shelf 3 weeks ago and found the instruction manual online. It’s really amazing how they figured out all that stuff. I’m a rank beginner. I like how it easily solves triangles. I like your explanation of using the different scales together (like CF to D), that doesn’t come through to well in the rote learning exercises. I found a basic Mannheim K+E 4055 in an antique store. Seems to date to 1939.

@sliderulesandmathematics9232

Жыл бұрын

cool!

@user-lk2cj2qs1d

7 ай бұрын

@@sliderulesandmathematics9232 I have a 1940's K and E

Wonderful video

Neat trick for cubes. Thanks. 🙂

I have both the K&E and the Pickett slide rules you are using in the video. In spite of the fact that the Pickett has more scales I tend to prefer the K&E. Probably because the K&E uses base e logs for the log log scales. The Pickett I got in 1972. It also came with a 6" pocket rule that I never really used or liked. I used the Pickett all the way through high school. The K&E is a log log duplex DeciTrig from the late 1940s. I had to replace the cursor on it as it was made out of some kind of plastic that just decentigtated over the years. Other than that, it's like new.

@sliderulesandmathematics9232

2 жыл бұрын

That was my dad’s rule

@OleJoe

2 жыл бұрын

@@sliderulesandmathematics9232 By the way. In your example of 6×4, what about putting the hairline on 6 on the D scale, then with the slide putting 4 on the CIF scale on the 6 on the D. Then move the hairline to 1 on the CF and read 24 under the hairline on the D scale? Lee H. Johnson in "The Slide Rule" calls this the "center drift method". Works out pretty well.

@sliderulesandmathematics9232

2 жыл бұрын

cool just shows there are many paths to the right answer.

@stephenkane9630

2 жыл бұрын

The Pickett N4 is base 10, N3 Pickett is natural log. Also, there is no need to slide the CF/DF index, once you have the C/D index aligned, you just move the cursor to the CF scale and read the answer under the cursor on the DF scale. as few movements as needed makes less mistakes.

@sliderulesandmathematics9232

Жыл бұрын

Absolutely agree.

Hi! I am the Head of Public Communications for the International Slide Rule Museum. Would you like to join one of our online meetings? We’d love to have you!

@sliderulesandmathematics9232

2 жыл бұрын

yes, very much so.

@MarvinClarence

2 жыл бұрын

@@sliderulesandmathematics9232 I’ve replied to your e-mail!

The lack of P scale in American rules is confounding. It is the only way a slide rule can offer high resolution for the sine values - between, say, 60 and 84, in addition to its general trig utility. I have a Hemmi 260 and Nestler 292, both of which have the R1 and R2 and P scales. I have a few Picket rules and find them busy and tough to read.

@sliderulesandmathematics9232

3 ай бұрын

I personally don't like the yellow, I find it difficult to read. I use the tan/white versions myself. I agree with your thoughts on the P scale, and as you know the 2/83 and AS 1068 both have P scales- that is why I got them in fact. I can always divide angles at the extremes (less than 5.7 and more than 84.3) by a radian, we can also play around with the inverted functions (sec, csc and cot) but you are right, it is a poor substitute for the humble P scale.

@TheMango2003

3 ай бұрын

@@sliderulesandmathematics9232 Yes, I have both the big and small Aristo, but they lack the R1 and R2, which you point out are very useful. I like the fact that you can go from an R1/2 scale straight up to the CF scale and go from radius to area of a circle with no movement beyond putting the cursor on your radius at the R scale.

@sliderulesandmathematics9232

3 ай бұрын

There are gauge marks on many slide rules to do that as well. That isn’t something I have used though

Hello. I have a pocket slide rule would love to learn how to use it. It is a Dietzgen but I don't see any other marks where I could figure out year for instruction or getting a manual

@sliderulesandmathematics9232

Жыл бұрын

have a look at the series here, it will show you how to use it. The markings are pretty standard.

Invert means what

Well paced video. The example on the LL scales was fine but did not explain the basic use of the scales which is to raise numbers to positive and negative powers. Hopefully you later provide this insight.

Algun tutorial en español Que el ingles no es lo Mio😅

Stop smoking!