This is gorgeous. I’m very afraid if I buy one it will trigger a wave of revulsion for normal everyday products and I’ll become one of these obsessive people who talk about fonts.
Knowing about Japanese Lacquer (aka Urushi) will change the way that you see the world. Urushi is the sap of a tree that is related to poison oak and posion ivy. You can learn to use it by wearing a biohazard suit or by suffering through until you develop an immunity to the urushiol. To call it "the itch" does not do it justice. You do not really know the full depths of being a human until you decide, with full knowledge of the consequences, to go down this road.
Urushi is transformed by curing in a warm and humid environment to something that is food safe and not toxic - for example Japanese rice bowls. Then there are they myriad decorative techniques such as Rankaku - using quail egg shells for decoration.
Time to start a project to make a handcrafted lacquer face for some other calculators; I have a few HP-80 (https://www.hpmuseum.org/hp80.htm) to test the idea on ;)
How many 4-function calculators have n-key rollover? What would that even be used for? Are you touch typing on the calculator at 100 digits per minute?
Urushi is transformed by curing in a warm and humid environment to something that is food safe and not toxic - for example Japanese rice bowls. Then there are they myriad decorative techniques such as Rankaku - using quail egg shells for decoration.
I've recently seen the word "entanglement" in a completely different context. But Urushi entangles you in nature and your environment in way that is utterly breath taking. For example: https://www.sothebys.com/en/buy/auction/2019/modern-masters-...
[edit for grammar and clarity]
I was never more unpopular at school than the day we had an exam and I was learning RPN on a calculator that beeped every time you hit the wrong key.