Where Is The Tint Control?

[Tom9589]

My bet is that it stands for Non-Inductive Technology. Sprague marketed a series of resistors designated NIT. The exact series had the power dissipation before the NIT. I.e., a Sprague Kool Ohm 10 NIT resistor was a 10 watt non-inductive resistor.

In the circuit for the Admiral, these resistors are in series with inductors so it is likely that the circuit designer didn't want any additional unknown amount of inductance added by the wirewound resistor.