Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium


Scaling on Drawings in PDF

Posted on 2011-05-02
Medium Priority
Last Modified: 2012-05-11
I am not sure if anyone can help with this question, but I ave a client who receives PDF files of scale drawings.  When they try to work their measurements off the drawing they are way out.  The drawings says it is scaled to A2 size, yet they are printing in A3 size.

I am presuming this will throw out the scalings on the drawing.

Does anyone know of a way to resolve this or is it is case of if the drawing is created in A2 scale then you must print the file in this page size in order for scalings to work and be accurate?
Question by:mbelletty
LVL 84

Accepted Solution

Dave Baldwin earned 668 total points
ID: 35509500
Though printing at the intended size should give better results, they should not really be making measurements on printed drawings.  While the programs and printers are good at relative position so that everything appears in the right order, they are not nearly so good at absolute position.  

In order to make my own circuits board from the printouts on my old HP laserjet, I would first print out a copy with some known dimensions on it and measure them to see how far off my printer was.  Then I would adjust the printing scale in the program (in both the x and y directions) until it measured correctly and then I would finally print out a copy on the circuit board transfer paper.

If the drawings don't have known x and y reference lines on them, it is difficult to even know whether your measurements are accurate.
LVL 12

Assisted Solution

silverkorn earned 664 total points
ID: 35509572
you need to check how the pdf file is being printed. in adobe acrobat there is an option in the bottom right of the printer settings window that gives options on the scale of the print. in order to keep the dimensions correct you should only print at 100% or no scale factor. if you wish to enlarge or shrink the drawing you can have the program apply a scale factor to the final print. you then need to apply this scale factor to the scale of the drawing as well. in other words, if you print a 1"=10' at 50% then the drawing effectivly becomes 1"=20'.

the easiest solution to this is to place a scale bar on the pdf file before printing stating the reference scale of the drawing. then any prints and copies made can be checked against this scale bar to ensure the actual scale of the drawing.
LVL 16

Assisted Solution

by:dhsindy Sparrow
dhsindy Sparrow earned 668 total points
ID: 35511990
If the measurements are critical the draftsman should put a graphic scale on the original drawing that you can measure for comparison or annotate important measurements.

Another source of errors can be your plotter.  I have measured plots of my own drawings that were off by as much as 2%.  Most plotters are close by not truly calibrated.

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Originally published Entrepreneur.com Booming numbers of freelancing professionals are changing the face of work. In the United States alone last year, the number of workers freelancing grew from 700,000 to 54 million, according to a Freelancers’…
Machine Learning is one of the profound applications of AI and therefore, just like AI, it is surrounded by myths and fears. Check out these facts about ML that demystify the related myths.
The Bounty Board allows you to request an article or video on any technical topic, or fulfill a bounty request to earn points. Watch this video to learn how to use the Bounty Board to get the content you want, earn points, and browse submitted bount…
Saved searches can save you time by quickly referencing commonly searched terms on any topic. Whether you are looking for questions you can answer or hoping to learn about a specific issue, a saved search can help you get the most out of your time o…
Suggested Courses

581 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question