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Thread: Find existing drawing file scale in Modelspace

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    100 Club Binu Mathew's Avatar
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    Default Find existing drawing file scale in Modelspace

    Hi to all,

    Does any one knows how to find the drawing scale of an existing drawing file

    best regrds
    BM

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    All AUGI, all the time zoomharis's Avatar
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    Default Re: Find existing drawing file scale in Modelspace

    Quote Originally Posted by BinuM
    Hi to all,

    Does any one knows how to find the drawing scale of an existing drawing file

    best regrds
    BM
    Devide total length of the title block by standard sheet size. For example if you have used A1 sheet and the length of title block measures 84100, then the scale will be

    84100 / 841 = 100 (Where 841 is the length of A1 sheet)

    Sometimes you can decide the scale directly by listing the title block.
    har!s
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    100 Club Binu Mathew's Avatar
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    Default Re: Find existing drawing file scale in Modelspace

    Quote Originally Posted by zoomharis
    Devide total length of the title block by standard sheet size. For example if you have used A1 sheet and the length of title block measures 84100, then the scale will be

    84100 / 841 = 100 (Where 841 is the length of A1 sheet)

    Sometimes you can decide the scale directly by listing the title block.

    Dear Haris,

    Pls note that i dont have any title or anything how can i find the drawing scale at Model space pls. understand my question...

    Binu

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    100 Club Commissar Rod's Avatar
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    Default Re: Find existing drawing file scale in Modelspace

    If the drawing lists a dimension, you can measure the distance the dimension is drawn at and then divide the 2 numbers and get the scale that way

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    Certified AUGI Addict jaberwok's Avatar
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    Default Re: Find existing drawing file scale in Modelspace

    If it's all in modelspace, it SHOULD have been drawn at its actual, true, real-world size.
    When required, the drawing border should be scaled up or down to fit around the geometry.
    John B

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    Administrator Mike.Perry's Avatar
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    Default Re: Find existing drawing file scale in Modelspace

    Hi BM

    Please note I have *moved* this thread from the AutoCAD Gallery forum to this one, as I feel this particular forum is a more appropriate place for such a topic.

    Thanks, Mike

    Forum Manager

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    Dynamic Blockhead Mod Chris.N's Avatar
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    Default Re: Find existing drawing file scale in Modelspace

    Quote Originally Posted by BinuM
    Dear Haris,

    Pls note that i dont have any title or anything how can i find the drawing scale at Model space pls. understand my question...

    Binu
    since the geometry should be drawn full size anyway, can you elaborate and explain why you are asking this question?

    (imperially) sometimes "civil" drawings are smaller by a factor of 12, as their "1" unit = 1 foot, where for me, "1" unit = 1 inch....
    Sometimes, i get lost in my own thoughts and need to ask directions to find my way back.
    S&D DB Sharing Forum

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    100 Club Commissar Rod's Avatar
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    Default Re: Find existing drawing file scale in Modelspace

    I agree that good drafting practices would dictate that it be drawn to scale in modelspace, however it is unfortunate that not everyone out there drafts to good standards.

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    Certifiable AUGI Addict tedg's Avatar
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    Thumbs up Re: Find existing drawing file scale in Modelspace

    As stated by others, your entities in model space SHOULD be drawn 1:1.
    The time "scale" comes in, is what your final output will be.
    Example: (if in model space) title blocks, dimensions, text, symbols and blocks would need to be scaled up according to your desired output plot scale.

    Do you mean you want to know what "units" the drawing is in?
    (command "ddunits")

    Ususally
    Civil is in decimal units: one unit = one foot
    Or metric units: one unit = one meter.

    Architectural is in architectural units, one unit = one inch,
    Or metric units, one unit = one milimeter.

    My two cents.....
    Last edited by tedg; 2007-04-10 at 11:44 AM.
    Ted
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    Default Re: Find existing drawing file scale in Modelspace

    Quote Originally Posted by tedg
    As stated by others, your entities in model space SHOULD be drawn 1:1.
    The time "scale" comes in, is what your final output will be.
    Example: (if in model space) title blocks, dimensions, text, symbols and blocks would need to be scaled up according to your desired output plot scale.

    Do you mean you want to know what "units" the drawing is in?
    (command "ddunits")

    Ususally
    Civil is in decimal units: one unit = one foot
    Or metric units: one unit = one meter.

    Architectural is in architectural units, one unit = one inch,
    Or metric units, one unit = one milimeter.

    My two cents.....
    Based on the information above you should be able to select a known standard object such as a door and deduce the scale from there. For example if you have a door that measures about 3 units it is decimal feet, or if that same door measure about 1 unit it is decimal meters, etc.

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