24PCS Square Chair Leg Floor Protectors Silicone Chair Feet Caps with Felt Pads, Transparent Furniture Leg Covers for Hardwood

My own readings, in pounds. The first point is the first reading I took; after that a point goes on only when a reading comes in 5% or more away from the one before it, which is why the gaps are uneven. The price above is a later reading that landed less than 5% from the last point, so it has no bar of its own.