It has Deere green paint sensor in it and will not level any other brand of deck, this is a internal function to try to discredit any other brand of cut. Frankly I'm shocked that the are so cheap (in price that is)

It will work on any brand of tractor. It just allows you to effectively measure the height of the blade from the ground. I have one and would recommend it.

It's a simple guage with a pivoting arm to read the blade height. It will work on anything.

I would not use one, it will ruin your deck's striping capabilities ; )