a lot smaller than its american counterpart. if i reverse the principle of the water balance and say i know the value of h. then i can use my plank scales to calibrate any weight. i simply made my object on the one side and then relate to your metric of values to the planck's constant and from that i can calculate the mass on the scale. of. the 2 planck scale prototypes from the technical university ill menow will eventually be put to industrial use currently they can be used to determine weights in the range between one milligram and 100 grams but it will be another 3 to 5 years before the 1st planck scale goes to market the paris kilogram meanwhile has already lost its status as the international benchmark and is now being consigned to a museum. along with the kilogram and the 2nd and the meter they are all sorts of the units of