pocket carat scales Subgroups Kern TGD 50-3CS05 namemanufactureVersionCapacitylegibilityitem No.carat scalesKern TGD 50not calibratable50g / 250ct0.001g / 0.005ct691173 Tanita 1230 namemanufactureVersionCapacitylegibilityitem No.carat scalesTanita 1230not calibratable20g / 100ct0.002g / 0.01ct691230