Petri dish ruler
A little bit pointless - allows for quick division of petri dish into equal segments by marking with a pen in the grooves.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/lek9Rbq14zK
A little bit pointless - allows for quick division of petri dish into equal segments by marking with a pen in the grooves.
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/lek9Rbq14zK