You can pass it through your form, you just have to escape those single and double quotes so that you get all of the data.
$measurement = "(139\'7\"x65\'3\")";
You can do this automatically by using addslashes()
$fixed_measurement = addslashes($measurement);
Then assign it into your hidden form element as usual.
If you're set on passing it somehow outside of the form, then you can pass it int he url, you may still have to addslashes() or urlencode() it, though.
www.yourpage.com?measurement=(139'7"x65'3")
I don't know if the quotes will still mess that up.
---John Holmes...