Review on 📏 Millimeter Conversion Tool - EZT Electronic Extra Large by Brian Delgado

So firstly I work in a welding shop, my measurements need to be accurate and so my quality department cannot calibrate them for shop use (caliper defects prevent accurate calibration) in the photo shows, that the inside diameter gauge has a slight bend. Second, the depth gauge has a ripple, so I can't trust it to determine the exact depth.