The only equipment you need to participate in the GripIron Fitness Challenge are a body fat scale and a measuring tape.

There are many good body fat scales on the market. The more precise the scale the less fluctuation you will see in your score. Fluctation is normal. Body fat, weight, and water retention can vary from day to day and throughout the day. GripIron scoring reduces the impact of such fluctations on your final score. But it is still preferable to have a higher precision scale as it will show your progress more quickly.