What you need:
  • URL address of an image showing the blueprint of the original vehicle, preferably black & white (you can find plenty of blueprints e.g. here)
  • certain dimension of your model (e.g. wheel diameter or track's width)
  • web browser supporting JavaScript, SVG files and alternate style sheets (for printing). Recommended browsers: Firefox, Opera, Google Chrome and Safari. Internet Explorer is not recommended.
Firefox 3Opera, the fastest and most secure web browserGoogle ChromeSafari web browser
Step 1
Paste & load URL address of the image file (NOT of a website that includes this image, but of the image itself):

Then, you can:
» fit image to the width of canvas or
» restore image to the original size
Step 2
Enter the known dimension of your model:
studs         width / height
then draw the respective dimension on the blueprint below and click here.
Note: the width or height is always taken from the first measurement, no matter how many you draw and even if you clear them all. It lets you change the dimension above and get updated results without starting anew.
Calculate the scale:
If you know the real counterpart of the dimension you entered above, enter it here to calculate what scale your model is in:
Units:     Unit accuracy:

Color used:

» clear the last measurement
» clear all measurements

What next?
You can print the blueprint with the measurements straight from your web browser as long as you're using a modern browser that supports alternate style sheets (Firefox & Opera are recommended).
You can also use Print Screen to copy the blueprint with measurements on it for further reference.