Equicrescent

It is well to notice that t, time, is an equicrescent variable, i.e., grows in equal steps. Thus, although time continually increases, it does so uniformly, so that the differential increment, dt, is constant, although time, t, is itself variable.

A variable regarded as taking on equal increments is an equicrescent variable.

The scale I2 is equicrescent, i. e., its subdivisions subtend equal angular intervals at the pivot point.