Mini Air Compressor 12V 150PSI Portable Electric Air Pump Car Tire Inflator For Motorcycle Bicycle Tire Air Filling Pump

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.