Inductance meter?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jolyon Vater Cox by way of Terry Fritz <teslalist-at-qwest-dot-net>" <jolyon-at-vatercox.freeserve.co.uk>

Is it possible get useful measure of  self- and mutual inductance in 
Henries or microhenries by (a) ramping a current with predetermined slew 
rate through a coil, or (b) by  breaking a fixed current flowing through 
the inductor  in a fixed time, by virtue of the voltage induced in the 
current-carrying inductor, or a separate coil inductively coupled to it?

Could the ping tester be amended to allow such measurents?

Jolyon