Everyone has an opinion on whether to erase or not erase when measuring out an egg. Some people are against erasing of any sort. When I am working on measuring out an intricate pattern, it is inevitable that I will need to erase. Many designs are difficult to measure out perfectly. So I do erase, but am careful to use a white eraser only.
Never Use a Pink Eraser!
I never have a problem with dye not covering an erased bit...Ever!
When I teach a class, one of the supplies that I give to a student is a new measuring tape and a mechanical pencil with white eraser. Below is an assortment of erasers that are good to use. I made a link for each one to a web site.