I have been out to the Plano, TX Demonstration Site which has a similar sifter and taken measurements and pictures. They are included here. Rotating Sifters - Two rotating sifters. One is constructed from a garden hose reel. It really works great.
Information is given on where to obtain instructions for both.
Frank Teuton's Sifters - Several sifters by Frank, including his famous Cantopper. Considerations for Choosing a Sifter Type A few commercially-made sifters are available, but I have not tried any of them or even seen any of them in person. Most sifters are home made, so create one unique to your situation. The more compost you need to sift at one time, the larger your sifter should be. Unless you are set up to catch compost as it falls through the sifter, you will have to lift and move it to the point of application.