Legend Code

Hello,

i want to create Legend Codes with images based on a specific Norm. I already created some and added the images. My problem is, that i dont know in which size i need to have the images so they are displayed correctly in the log, like the ones from Bentley. I already found some information in the "How To Use Color Coding for Material Graphics". There the images for the colors are 100*60 pixels. But they look a little bit smaller than the pattern-based graphics. For a filled graphic its not important, because it does not have an effect on the scaling, but it has for the pattern-based graphics. I just cant find out the size from those existing images. Can anyone help?