One way to greatly increase your accuracy is to be ruthlessly consistent in your
pinching technique by using an "anatomical landmark." This means that before
grabbing a skinfold, you must carefully LOCATE the precise spot to pinch by finding
a reference point such as a bony protrusion (like where the top of your hip bone
pokes out). That reminds me, one of my clients once had her husband mark "the
pinching spot" with a permanent marker to improve her testing accuracy. Kind of
funny, but I'm sure she got a very accurate reading each week! (Although she'd
probably get some odd stares if she showed up at the beach with lines drawn all
over her!)
Anyway, the purpose of the "anatomical landmark" is to help you pinch exactly the
same spot each time to increase your accuracy. If you pinch one inch to the left,
right, above or below the usual spot, this will decrease your accuracy. Locating the
anatomical landmark will help you pinch the exact same spot every time.