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  • Gern
    SMF Supporters
    • May 2009
    • 9214

    #16
    You should trust the calculations and not the ruler. The arithmetic will always give the correct answer, assuming you press the right buttons on your calculator - unless of course you're trying to work out 2 + 2 ÷ 2 = :smiling3: :smiling3: :smiling3:!

    It more likely that the markings on your ruler have not been scribed accurately.

    I don't know why you need a special calculator for scales. There's only a couple of things to remember:

    ALWAYS use millimetres as your start measurement.

    From real to scale size, divide by the scale.

    From scale to real size, multiply by the scale.

    The answers you get will be the measurement you want in millimetres.

    If your answer looks silly, you've done your calculation the wrong way round.

    Comment

    • boatman
      SMF Supporters
      • Nov 2018
      • 14477
      • christopher
      • NORFOLK UK

      #17
      Originally posted by Gern
      You should trust the calculations and not the ruler. The arithmetic will always give the correct answer, assuming you press the right buttons on your calculator - unless of course you're trying to work out 2 + 2 ÷ 2 = :smiling3: :smiling3: :smiling3:!

      It more likely that the markings on your ruler have not been scribed accurately.

      I don't know why you need a special calculator for scales. There's only a couple of things to remember:

      ALWAYS use millimetres as your start measurement.

      From real to scale size, divide by the scale.

      From scale to real size, multiply by the scale.

      The answers you get will be the measurement you want in millimetres.

      If your answer looks silly, you've done your calculation the wrong way round.
      YEA back to front an upside down lol :rolling: :upside::smiling4::smiling4::smiling4:
      chris

      Comment

      • JR
        • May 2015
        • 18273

        #18
        Originally posted by adt70hk
        John,

        Sorry can't help but have enjoyed the humorous posts nonetheless!!
        ATB.

        Andrew
        Glad you found it amusing Andrew :smiling3:

        Originally posted by monica
        I,m with Chris,[ boatman ] on this one as well never been good at working them out and have
        over the years ask for some help ,just don,t get my head around it, :disappointed2:
        Think the only time you need to work to a scale is when you've got a dio as well Mon.

        Originally posted by Gern
        You should trust the calculations and not the ruler. The arithmetic will always give the correct answer, assuming you press the right buttons on your calculator - unless of course you're trying to work out 2 + 2 ÷ 2 = :smiling3: :smiling3: :smiling3:!

        It more likely that the markings on your ruler have not been scribed accurately.

        I don't know why you need a special calculator for scales. There's only a couple of things to remember:

        ALWAYS use millimetres as your start measurement.

        From real to scale size, divide by the scale.

        From scale to real size, multiply by the scale.

        The answers you get will be the measurement you want in millimetres.

        If your answer looks silly, you've done your calculation the wrong way round.
        Dave I bought that scale rule when I first came back to modeling because of building dios, by the time you read this it will be in the bin ! :thumb2:

        Originally posted by boatman
        YEA back to front an upside down lol :rolling: :upside::smiling4::smiling4::smiling4:
        chris
        Chris could you ask Jen to give you some more of the meds Matron left. I think its time.:smiling3:

        Comment

        • Gern
          SMF Supporters
          • May 2009
          • 9214

          #19
          Back when the world was very young, I started an engineering course. One of the modules was of course technical drawing and we students were supplied with all the drawing instruments we would need for the course (They weren't free mind, we had to pay a weekly amount). One of the items supplied was a triangular scale rule with 6 assorted scales. I can't remember what happened to mine but I know I never used it for any sort of measuring. Longer lines were done using the rules on the drawing board so I suspect the only thing I used it for was putting in cross hatching!

          Comment

          • boatman
            SMF Supporters
            • Nov 2018
            • 14477
            • christopher
            • NORFOLK UK

            #20
            YEA back to front an upside down lol :rolling: :upside::smiling4::smiling4::smiling4:
            chris
            (boatman quote)

            Chris could you ask Jen to give you some more of the meds Matron left. I think its time.:smiling3:
            (John quote)


            :thinking: :rolling::upside::smiling4::smiling4::smiling4:Joh n im full of them now as matron dint leave enough as unknow to me till i caught her jens been getting high as well on them as she's been danceing in the livin room lol :rolling::smiling4::smiling4:so have not got no more meds an if matron returns please tell her to leave her big neddles at home as Aaaaaaaaagggghhhhh they hurt lol:face-with-head-bandage::cold-sweat::flushed:

            chris an jen

            Comment

            • Guest

              #21
              John it is dead easy just need, for quickness, a calculator.

              Take the real dimension & just divide it by the scale you are working at.

              For instance

              length of a post : real dimension 1300 millimeters. Scale reduction 1/48

              divide 1300 by 48 = 27mm at a scale of 1/48

              Laurie

              Comment

              • JR
                • May 2015
                • 18273

                #22
                Originally posted by Laurie
                John it is dead easy just need, for quickness, a calculator.

                Take the real dimension & just divide it by the scale you are working at.

                For instance

                length of a post : real dimension 1300 millimeters. Scale reduction 1/48

                divide 1300 by 48 = 27mm at a scale of 1/48

                Laurie
                Laurie, thank you , yes I do that , but sitting at the bench with out my phone I just reached out for that rule. Normally I would do a quick drawing then use the calculator or if near the pc the scale converter.
                I was only when I rechecked the rule measurements against the programme that this became apparent. Strange that RB of all makers got it so wrong. Its now in the bin!

                Comment

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