1x1 Block 1.25in ruler 3 mm slot.stl

The slots for this model https://thangs.com/designer/atrimbletlr/3d-model/Gridfinity%20Ruler%20Holder-74621 were too narrow for my rulers. I made 3 mm slots.

NOTE: you may have to resize this model to 10%.

This fits Zack Freedman's gridfinity system.