Ian, could you give some more details on your usage of the 1/98, please? When did you start to use it? When did you stop to use it? For which reasons? Which calculations did you perform on it? Did you

Hi Ian, thanks a lot for your replies! I don't enough time right now to reply immedeately since somehow I suffer from superposition of different tasks with approaching Christmas... I'd be interesting

Hi, that slide rule has quite an interesting scale layout; somehow a mixture of everything. It seems to borrow the P and Q scale as well as angle scales from the Hemmi 153 adding however no Guderman s

Hi all, well, nobody answered so far, then I give it a try... The UTO 932 is a typical US layout. Folded scales and loglog scales on one side and on the other side typical Mannheim design with Trig on

PS: The outlook is outdated. Since I took care about electronic calculators I know that current Casios have keys for transformations between polar and carthesian vectors if not even be able to calcula

Hi I remember quite good when I learned multiplication and division on the sliderule: It was in grade 5 at school, where calculators where not allowed before grade 9 or 10 in Bavaria. I got the slide

Hi, I've spent a lot time during last months to discover the world of modern calculators. Somehow I seem to have a break-through today finding that: https://www.researchgate.net/publication/277475144_

Yes, I also checked the TI NSPire II Cas. The TI calculators somehow have the most consistent design. So they may think a function is a function and no relation... The Nspire with its connected docume

Hi Meine, I also wonder about the 25cm: not on French, German and Japanese slide rules but on British and American sliderules. Are really all modern American slide rules based on 25cm? Why didn't they

Hi, a happy new year! Did you measure the cm scale of the old rules whether it is is precise? And if the cm scale is precise how long is the scale length precisely ? Best regards Andreas Am 01.01.2020

Ah, compromise: Openly: that is what I'd believe last. Compromises are not a German strength. A Bavarian strength however is freedom and generosity (known as Liberalitas Bavariae). I would believe tha

Just call it Reiss Duplex!-) Am 03.01.2020 um 13:07 schrieb meine:

Hola Jose, in tiempos de "googlar" y de la wikipedia seria beneficioso a haber un link o/y una cita en el articulo de wikipidia. En el articula Aleman esta esta: https://de.wikipedia.org/wiki/Rechensc

Hi, if it is about making slide rules in low amounts then my way to go would be laser engraving. Actually the biggest problem remaining would be how to create the slide/body/braces in good quality. A

Hi, Though I am not the expert on laser engraving: When engraving on "normal solid materials" it mainly should depend on the laser diameter which is some 25 micro meter. So even of we assume, that we

At that time it could be however seen as a French-German miracle that Germany used the metric system!-) From a pragmatic point of view however, when the second German Empire was founded in 1871 (in Ve

Maybe usage of celluloid made it possible to get down from 36cm to 25cm without loss of accuracy. I wonder that there was 36cm in France. Rule length or scale length? Did the Frensh in early 19th cent

Metric pound in Germany: thats true; back in the days I was a child vegetables and bread were sold in "Pfund" (pound) and had an own short sign. Potatoes and flour were sold in Zentner (centner) meani

A while ago we had this subject yet and I thought about DI and wrote this (in July last yr): Hi, DI might be useful for tangents of angles between 45 deg and 90 deg when using normal T(1) scale since

My predecessor used pstricks to do "calculated" pictures; there I haven't noticed problems with precision. Beside using "good" number ranges "xfp" may help, at least in pstricks: https://www.texdev.ne