Design Features: Knob style weights 50kg-1 g are cylindrical with knob. Cal-Pak 5kg weight is a grip handle weight. Cylindrical style weights 1kg-5k have groove. Cylindrical grip style weights 4kg-30kg have recessed grip. Cylindrical weights 10g-600g are straight cylinder.
Applications:
Use Class 4 as a primary reference to calibrate other mass standards and use for traceability between national mass standards and ASTM Class 2 weights and lower
Class 4 is appropriate for calibrating high-precision balances with readability as low as 0.1mg.