I had a golfsmith digital scale for years. For the most part I thought it was accurate. The last 6 months I had it something was going on. It would read inconsistent. I would check it with the calibration weight that came with it and that always weighed perfect.
Finally it got to the point the my swing weights were coming up 3-4 pints lighter than what they truly were. That’s when I went back old reliable beam scale that had a level base. Always right on the money.