The link you gave was for Arlyn Scales. Of course, the Gnome was measured with a Kern scale. The superior Kern scales can be compensated for your local conditions either at the factory before your item is shipped, or you can do it yourself. All of that is irrelevant in this case anyway. You are confusing the idea of mass and weight. A mass standard is universal, at least on the planet earth, and is the resistance of that mass to being accelerated by a force. There is an international standard for mass here on the earth. Weight on the other hand is a measurement of the gravitational force on a given mass by the mass of the earth (usually). The Kern scales can be compensated for your individual location before it’s shipped. The whole idea of the Gnome exercise would be to explain that the earth’s gravitational force is different in different locations and is the reason that Kern should be paid extra to compensate your precision scale to your exact location. Mass is much more difficult to measure than is weight. If you have a compensated scale, then your weight and mass should be the same anywhere you measure it. Shocking.