That's cute. Almost exactly the same capabilities as the tube-era Heathkit EC-1 educational analog computer [1], but much smaller.

Analog computers are no fun without an oscilloscope. Once you can see graphs, you get intuition about how the inputs affect the outputs. If you only have a meter, you have to write down data and plot.

[1] https://www.analogmuseum.org/library/heathkit_ec1_operation_...