is a trade name for a class of chemicals (known as Chlorofluorocarbons or CFC's) used as a refrigerant in air conditioning systems. Freon is a gas at room temperature and a liquid when cooled or compressed. Freon gas is colorless, non-flammable and relatively odorless. Some Freons have an ether-like odor.
How should I take my forearm circumference measurement? In order to take your forearm circumference measurement, you should tense your arm muscle and measure around the thickest part of your forearm, as pictured.
Place the goniometer over the elbow joint. With the subject's arm extended straight out, place the goniometer over the elbow joint and above the top of the arm. The subject should extend the arm straight out to the side so that it runs perpendicular to the line of the body. The forearm should point down. Keep the shoulder, arm, and wrist straight.