Here are the specific instructions for using the Accu-Measure 3000 Skinfold Caliper. See also the general instructions for taking skinfold measurements for calculating body fat percent.
- Identify the measurement site. The site recommended for using these calipers is the suprailliac, and there are charts available for converting this measure to a percent bodyfat. It is standard for measurements to be taken on the right side of the body. The location of suprailliac is approximately one inch above the point of the hip bone (according to the documents that come with the calipers). More accurately, the mark is at the intersection of a line joining
the front part of hip bone to the front fold of the armpit, and a horizontal line
at the level of the top of the hip bone at the side. Most importantly, make sure that the same location is used each time you take a measurement.
- Pinch the site: Hold the caliper in your right hand, and take a pinch at the site with your left hand to raise a double layer of skin and the underlying adipose
tissue, but not the muscle. The pinch is directed towards the center line
and downward, following the natural fold of the skin (at an approximate angle of 45 degrees). The calipers are then applied 1
cm next to the pinch. Press the thumb on the caliper arm until the notch is engaged, and immediately stop pinching. You can now take a reading off the scale. You should take at least two measurements.
If the two measurements differ greatly, a third should then
be done, then the median value taken.
- Compare: Refer to the male and female fat measurement charts that come with the calipers to determine your body fat percent. Look for your age group, the move across to the appropriate fat measure reading in millmeters. You can then see a percentage score, and below a rating of lean, ideal, average or above average.
Important: Before each measurement, make sure the caliper spring arm is released from the locking notch, and the slider on the scale is moved all the way to the far right.
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