To determine the body frame size measure the wrist with a tape measure and use the following chart to determine whether the person is small medium or large boned. You can determine which category you are by measuring the circumference on your wrist or the breadth of your elbow.

How To Measure Wrist Size 10 Steps With Pictures Wikihow
Does wrist size determine frame size. Then check the chart below. Small medium and large. If they overlap you are small framed. Body frame size is determined by a persons wrist circumference in relation to his height. This is less accurate. Each range varies depending on your gender.
Use a measuring tape to measure the circumference of your wrist the smallest part just above the bone. 130 lbs 144 lbs. Wrist circumference is often used for determining frame size since people who with larger frames also have larger wrists. Once you know your wrist size compare it to your height to determine body frame size. Height under 52 small wrist size less than 55 medium wrist size 55 to 575 large wrist size over 575 height 52 to 5 5. Step 1 below begins to detail each method.
There are three frame size categories. For women 5 foot 2 inches to 5 foot 5 inches tall a wrist size of 6 inches or less is considered small framed 6 to 625 inches is medium framed and 625 inches or greater is large framed. To determine the body frame size measure the wrist with a tape measure and use the following chart to determine whether the person is small medium or large boned. Height and frame size are used to determine your ideal weight range. Medium height more than 5 ft 5 in and wrist between 625 in and 65 in. A woman over 5 foot 5 inches tall and a wrist that measures 625 to 65 inches around has a medium frame.
For example a man over 5 foot 5 inches tall and a wrist that measures 65 to 75 inches around has a medium frame. If they touch you are medium framed. Wrap your thumb and middle finger around the smallest part of your wrist. For a woman between 5 feet 2 and 5 feet 5 inches you have a small frame if your wrist size is less than 6 inches a medium frame if its 6 to 6 14 inches and a large frame if its over 6 14. Your calculated frame size small medium or large. Wrist measurement with fingers.
Your wrist circumference between the hand and the prominent wrist bone.