A suture attaching station attaches a needle and a suture to form a single combination. The setup of the crimping unit is facilitated by using an offline measuring fixture. The offline measuring fixture is calibrated by placing a precision gage block into the measuring fixture and then zeroing a digital measuring unit. The gage block is then replaced by the desired crimping die and the reading is noted as an offset for the servo drive of the suture attaching station. This offset is used to set the zero point of the crimping die centre.