No, you are not batty. It attaches to the bottom of your easel and came in two sizes.
I saw the advertisment either in an issue of "International Artist" or "Pastel International" magazine. I will try to find the advertisment but cannot promise success.
I just wanted you to know that it does exist, so persist.
No, you are not batty. It attaches to the bottom of your easel and came in two sizes. 
Threaded Mode
