There is a very important phenomenon in the researches on inductive reasoning: the number of premises has a great influence on inductive strength, called monotonic effect or non-monotonic effect.
Analogue meters and potentiometers can be replaced by digital meters and non-inductive resistors in the classical ballistic method, so it makes wiring and operating more easier.
The products are made of polypropylene film as the dielectric, metalized film as the electrode, non-inductive construction, encapsulated in a plastic sealed with epoxy resin.