I think that when Epilogue/DataLogger logs Measures it can be confusing if you don't know the base unit. It would be good for it to append the base unit's symbol to the identifier. E.g. when doing dataLogger.log("Motor Voltage", motor.getVoltage()) it would log it as "Motor Voltage (V)".
And when Epilogue logs Measures from fields or methods it should do the same thing. This would be especially useful for units like Angles which people might not expect for the base unit to be radians.