device for setting the indication to zero when a load is on the load receptor: - without altering the weighing range for net loads (additive tare device); or - reducing the weighing range for net loads (subtractive tare device). It may function as: - a non-automatic device (load balanced by an operator); - a semi-automatic device (load balanced automatically following a single manual command); or - an automatic device (load balanced automatically without the intervention of an operator).