The models definately not the best and I printed it with brim, because the bottom is not very symmetric. I made this quickly, but have used it many times!

Very good when you have to fill some oil from the side and you have to see when the container will be full. The first purpose for this was to fill my Honda Shadows rear diff with oil, but I have used it with Harley Davidson primary drive and when filling cars rear diffs.

Printed with 0.4mm nozzle and default 0.2mm layer height. Turn the model so that the flat at the bottom will be aligned with the bed.