Spotter Scope Objective Cover

I purchased a spotter scope that was lacking a cover for the objective lens. I started with the bottle-cap shape and modified it by adding a loop for a string to attach it to the scope. I also removed the threads and then sized it to fit the scope. It can be scaled if needed. Place with open side facing up. It does not need supports.

I printed it in PETG. Other filaments could be used.

This object was made in Tinkercad. Edit it online https://www.tinkercad.com/things/dBAZTrAXeri