Chinese Refractometer storage box

Just a box with sliding lid for my refractometers from Aliexpress. I got two of them- one for automotive purposes (coolant, battery electrolyt, windscreen wash) and second for lathe/milling machine coolant. I've noticed that refractometers has slightly different lenght, even it is one manufacturer brand, so I've designed my box to fit that is longer. Other one, of course, fits nicely too. I've glued some foam material in compartments, so there is safe and no rattling. There is three versions of lids- two with labels on Cyrillic and one is blank.
I hope someone find it useful.