I needed a way to run a string line off a torpedo level so I could make the tops of posts match, even when the posts were sitting on different height bases. I couldn’t find an STL for it, so I made a simple one in Tinkercad and it works, so I’m sharing it.

Designed For

Level: Empire 581-9

Level dimensions: ~40.5 mm tall × 15.9 mm thick

Model dimensions: Printed size 40.6 mm × 16.1 mm
This gives a smooth slip-on fit — snug enough to stay in place but easy to remove.

Notes

Model created from scratch in TinkerCAD.

Scale slightly in X/Y if your torpedo level dimensions differ.

Feel free to remix or modify for your brand of level.