eStep Ruler
thingiverse
yet another eStep Ruler , and why? ... because I can :) You could print this is anything you want (maybe even TPU), but I tend to print in ABS+, simply because it so HOT at this time of year, here in Brisbane, Oz. ABS is perfect to print in this climate. This ruler is really easy to use and works with different filament feed types. Just place the T shaped end against the filament extruder then make two marks, one at 100mm, then another at the end of the rule (120mm). Set your printer to extrude 100mm of filament and see where it ends up. The mark at 120mm is for the case when you are over extruding, so you measure from the end backwards to give you a number for the eStep equation.
With this file you will be able to print eStep Ruler with your 3D printer. Click on the button and save the file on your computer to work, edit or customize your design. You can also find more 3D designs for printers on eStep Ruler.