For you ladies with r arthritis, why not try the lipped ruler along with the "dent puller" so you can have less slippage and be able to apply pressure without bending your wrist and fingers backwards. I don't have either tool, or R.A., but my sister had RA and I know it was easier for her to do any kind of chore involving her hands if she could use the palm to apply presssure instead of fingers. Just a thought..