When a type of weight or measure or weighing or measuring device is approved, the bureau shall issue a certificate of approval to the person submitting such type. When a type is disapproved, the bureau shall notify the person submitting the same of its decision, setting out the reasons therefor, together with such information and references as may be useful in judging of the propriety of the disapproval, and shall give the person an opportunity to be heard in support of his application for approval. The bureau shall then reconsider its decision. If the new decision is adverse to the person and he is dissatisfied with the same, he may take an appeal from this decision to the department, which shall examine the matter and decide whether the type should be approved or disapproved. If the person is dissatisfied with the decision of the department, he may appeal in accordance with the law.