Duo-cuvette (laboratory equipment) holder

This cuvette holder is used in our laboratory to place liquid filled cuvettes in a stove where they are heated to about 70 degrees to measure the color of the product in the cuvette after heating. Two cuvettes can be placed at the same time, the cuvettes are quite narrow and because of this handy holder they do not fall into the stove: it prevents a product spill.

I have added the Fusion360-file also.