This cup was designed to measure detergent for the washing machine. Obviously, it is up to you to measure other materials with it as well.

The included scale has small markers for each 5ml content, medium markers for each 10ml content, and long markers for each 50ml content. There are some special markers at 60ml, 95ml, and 150ml since those are the recommended amounts for low/medium/heavy dirty clothes by my detergent brand.

The model needs to be printed in vase mode with a solid bottom. The scale is correct when the solid bottom is a total of 1mm and the model is either printed with a 0.8mm nozzle or the extrusion width for the external perimeter is increased accordingly to like 0.9mm.

If you want different sizes, different nozzle widths, or different marks you may adapt the dosing.scad file from https://github.com/schiele/3dmodels

Scaling the model is not recommended since this messes up the scale.