Vernier Square 250 mL Nalgene Bottle for O₂ & CO₂ Sensor holder

Vernier's oxygen gas sensors have to be stored upright and are designed to store in the square 250 mL Nalgene bottles they come with. I've found that they're a little top heavy and tend to topple or just get bumped around my shelves. So I designed a rack to hold 9 sensors together. The carbon dioxide sensors do not have to be stored upright, but it is convenient to store them the same way. I used the printer test to make sure that the bottle fit inside the square and to test the depth of the label. The final 3x3 model is taller and the fit is a little snug, but not enough for me to redesign & reprint it; the final model also has the labels a little less deep into the plastic. This was inspired by this pH rack on Thingiverse by NAbel https://www.thingiverse.com/thing:3247407.
This object was made in Tinkercad. Edit it online https://www.tinkercad.com/things/9TSSKyl9DkY.