Thermometer caps (29,5 mm diameter)

Old plastic caps - endings of an outside thermometer broke into pieces due to years of UV ageing on sunlight. These are to replace them. The thermometer glass tube diameter is 29,5 mm, i don't know how to make it parametrisable, but you can simply use your slicer to scale in x, y, z axis to fit your needs.

Upper cap has a "loop" to be able to hang the thermometer on a string (as on photo).

Lower cap has a square part to prevent rolling on a flat surface, e.g. when you lay it on table or a