If you believe it's 'Outdated' with these old Jeeps,
Then sell it to me CHEAP!
Seriously,
Ohms test for plug wires and other resistance issues,
Dwell for CORRECTLY setting breaker point ignitions, and checking up on HEI modules with Variable Dwell,
An Ammeter for checking alternator output, checking electrical loads,
A Voltmeter for checking battery and charging system condition,
A tach with Hi/Low for setting curb idle, also good for checking RPM when you are messing with advance curve, ect.
Pretty handy tool for the 'Non Computer Diagnosed' problems you might encounter with older vehicles.
They are getting scarce, and I've been looking for a hand held one for a while...
Keep finding the box type that are about the size of a 'Boom Box'!