This was a very clear explanation with the close ups of the scales. Just imagining your reaction if a student brought this to a math or physics test.

I don't know anyone who knew how to used that device, but our old one room school that I attended in 1960 had one of those sitting on a book case in the back of the room.

Excellent instructions. Nice examples. Once I've fixed mine (the shellac varnish, although perfectly clear, is crazed. Apparently the cure is judicious application of methylated spirit/wood alcohol, but I've been too nervous to do it so far) I shall flourish it with pride! Thank you.

I’ve just acquired one of these, it appears to be from the 50s loss has Bakelite parts. Unfortunately my vision has deteriorated so badly but I can’t possibly use it no I’m hoping that I can teach my young nephew and nieces to do so and they may take it in to their schools maths classes.

An incredible invention....thanks for the vid.

@jobersudyobodou9362

7 ай бұрын

What a treat to see something so delightfully new (to me)!

🤔To be pedantic (I'm an engineer. It's what I do! Sue me! 🤓), accuracy and precision are not the same thing. It is better to say their _precision_ depends on the length of the rule. There are many factors that control the _accuracy_ of a slide rule, not the least of which is the person using it. To provide a definition, precision is "3 or 4 significant figures". Accuracy is, "Is it 5.10 or 5.25? Enh, who cares? It's close enough!" In other words, the +/- 0.5% of the final result, which becomes important when that number gets carried forward in subsequent calculations and you're a NASA engineer trying to get a space probe to, say, orbit Mars instead of cascading off into deep space... Wait, did I say that?? 🤣 With a quality slide rule, paying careful attention when operating it (especially if you can operate it under a magnifier), trying to take into account some of the problems inherent in manufacturing such a device and duly compensate, in my observation, can cut your margin of error by 70-80% to within +/- 0.15% of what you'd get by performing the same computation on a pocket calculator with a standard 10 digit numeric display (which usually actually operates over 12 digits internally and displays the truncated result). 🙂 Great video on the Fuller. I'd been wondering how that worked. I think I know what I want for Christmas! Next, you need someone to go buy you a Thacher! 😅 At least that one has a book available!

@sliderulesandmathematics9232

Жыл бұрын

Thanks man.

@robwhythe793

10 ай бұрын

Interesting to see this being demonstrated! My Dad used the Fuller concept in designing something similar back in 1960, to multiply complex numbers, during his work for BBC radio research. He used the linear movement to represent the "real" part, and the rotational axis to represent the "imaginary" part. It was sold by Stanley as the Fuller-Whythe slide rule for a brief period (1961-67 roughly), going out of use when electronic calculators arrived, so it didn't make him rich, but it did earn him a few bonus cheques every now and then.