my guess would be that this console was at one point part of a larger set of engineering test modules. the H1, H2 and M are likely to represent various states within a hilbert space and the operator button would have been used to implement whatever function the algebra operator was given within those states. given its age id say its a prime candidate for quantum engineering test equipment.


"It is what it is." R.R.
CTP, TCTS, StrataCIX