Are you trying to sort  "inches" and "feet"?

If so, you need to cast both objects in your comparrison to a
String. Then, use a <string>.indexOf("\"") to find where the " is or
a <string>.indexOf("\'"); to find where the ' is.

Then, you can use a substring method to extract the numeric and
the "measurement type" from the string.

Now, you can convert each number to an int and multiply the ints
which represent "feet" by 12 to normalize all the metrics. Now, you
can actually compare the two values.

This seems like a lot of work, but it really isn't. And once you
write it, you don't have to do it again.