New use for a slide rule

New use for a slide rule

Home Forums Hints And Tips for model engineers New use for a slide rule

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  • #546787
    Timothy Maxwell
    Participant
      @timothymaxwell68628

      My first such line was in watches, it was very convenient. This watch was given to me by my father when I was young. Mark Carson, the author of the slide rule in watches, said: “I grew up without computers. My father, as an engineer, used slide rulers and taught me how to use them when I was 12 years old. The round slide rule was my favorite because it had no beginning or end. Sometimes people ask me how I guess the exact value, for example, 1.1? My father taught me to keep the answer in my head. The slide rule only clarifies the value. If your $ 20 restaurant bill requires a 15% tip, the amount you need will not be 23 cents or $ 230. The invoice with a tip will amount to $ 23 ".

      #546802
      Michael Gilligan
      Participant
        @michaelgilligan61133

        Your post intrigued me, Timothy … so I went a-googling, and found this: **LINK**

        How To Use A Watch Bezel Slide Rule

        MichaelG.

        #546854
        Peter G. Shaw
        Participant
          @peterg-shaw75338

          I too have three slide rules: Faber Castell 57/92 (10", Boots Ringplan Standard (10", and a Helix A50S (5". Of these, the Boots suffers from a rather slack slide which makes life difficult whilst the Helix despite it's short length, has the most scales.

          But my Casio HS-5D 8 digit 4 function solar powered calculator gets the most use!

          I've also got a vague recollection of being taught how to use the slide rule in C&G Maths 'A' – I can't really see it being taught in 'B' & 'C'. If so, that was in 1959/60 academic year at Bradford Technical College.

          Peter G. Shaw

          Edited By Peter G. Shaw on 24/05/2021 17:12:40

          Yet another Edit. I've got the blasted Smileys! They are NOT part of the original – it should be a double quote in each instance, eg ".

           

          Edited By Peter G. Shaw on 24/05/2021 17:14:31

          #546858
          Michael Gilligan
          Participant
            @michaelgilligan61133
            Posted by Peter G. Shaw on 24/05/2021 17:01:00:

            I too have three slide rules: Faber Castell 57/92 (10", Boots Ringplan Standard (10", and a Helix A50S (5".

            […]

            Edited By Peter G. Shaw on 24/05/2021 17:12:40

            Yet another Edit. I've got the blasted Smileys! They are NOT part of the original – it should be a double quote in each instance, eg ".

            Edited By Peter G. Shaw on 24/05/2021 17:14:31

            .

            It’s all part of a cunning plot by the Metricators, Peter

            Every time you use Inches they insert a stupid smiley

            … I presume it’s an attempt at Pavlovian conditioning.

            MichaelG.

            devil

            #546905
            mark costello 1
            Participant
              @markcostello1

              Curses foiled again.wink

              #546927
              Peter G. Shaw
              Participant
                @peterg-shaw75338

                Thanks Michael, I thought it would be something stupid like that.

                Pater G. Shaw

                #546931
                Michael Gilligan
                Participant
                  @michaelgilligan61133

                  More seriously, Peter

                  Basically, the forum software has a look-up table of substitutions for certain keystroke sequences

                  This ‘feature’ could have been switched off, but apparently “the powers that be” decided we should have it.

                  .

                  Have a look at this thread from 2014 : **LINK**

                  https://www.model-engineer.co.uk/forums/postings.asp?th=99158&p=1

                  and particularly the third post … where I wrote:

                  I think this is a reaonably comprehensive list of the Micro$oft keyboard shortcuts for the dreaded emoticons.

                  ____

                  MichaelG.

                  #546977
                  Peter G. Shaw
                  Participant
                    @peterg-shaw75338

                    Emoticons.

                    Here's what I think about them.

                    Utter, utter, rubbish.

                    It seems to me that this is (these are?) another silly idea from someone , possibly a so-called programmer, simply showing off and saying, in effect, "Look how clever I am!". What these people forget is that other mere mortals then have to learn these darned things, firstly what they mean, and secondly how to use them. Frankly I don't want to know, and I don't care about them.

                    This episode reminds me of a time some eight or so years ago when I was attempting to find a Linux distribution which I could reasonably easily use. Now a few years prior to then, I had tried Suse 9 along with KDE 2 and found it quite palatable so naturally I tried again only to find that Suse was now using KDE4. Unfortunately, when attempting to create a better looking desktop, better looking for me that is, I got myself well and truly screwed up. Why? Because the so-called programmer had seen fit to use a tiny device known as an almond which sat in the very corners of the screen looking for all the world like a screen aberration. I, of course knew nothing of this and so Suse was abandoned in favour, eventually, of Mint with the Mate desktop.

                    Over the years I have, unfortunately, come across a large number of what can only be described as poor, if not bad, programming where the programmer has quite obviously not thought about the end users, eg, the questionaire where I was asked my occupation (retired) – two questions further on, what does my employer do! Another one, a list of options which was in any old random order rather than the obvious alphabetic order: that same list didn't even contain the obvious "None of these".

                    I apologise for the rant, and before anyone says anything, I am well aware that there is a cost involved. But if poor programming results in the users going elsewhere, then what then does the cost matter?

                    Gosh, I feel better for that.

                    Peter G. Shaw

                    #547044
                    Timothy Maxwell
                    Participant
                      @timothymaxwell68628
                      Posted by Michael Gilligan on 24/05/2021 13:05:37:

                      Your post intrigued me, Timothy … so I went a-googling, and found this: **LINK**

                      How To Use A Watch Bezel Slide Rule

                      MichaelG.

                      Michael, I am so glad that my words can intrigue someone.wink

                      #547072
                      SillyOldDuffer
                      Moderator
                        @sillyoldduffer
                        Posted by Peter G. Shaw on 25/05/2021 09:28:10:

                        Emoticons.

                        Here's what I think about them.

                        Utter, utter, rubbish.

                        It seems to me that this is (these are?) another silly idea from someone , possibly a so-called programmer, simply showing off and saying, in effect, "Look how clever I am!". What these people forget is that other mere mortals then have to learn these darned things, firstly what they mean, and secondly how to use them. Frankly I don't want to know, and I don't care about them.

                        Peter G. Shaw

                        Peter's got it all wrong – 'so-called programmers' are harmless. No, he's been done over by a 'Real Programmer': “If it was hard to write”, says the Real Programmer, “it should be hard to understand.

                        devil

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