The Brady calibration label comes packaged 1 card per pack. These items come in a variety of shapes & sizes to accommodate many situations. The measurements for the Brady B-184 calibration label are: 1 1/2 in W x 1/2 in H. One of the important components to selecting the right product is the proper label and adhesive material. This calibration label uses aluminum foil for the label material and permanent acrylic as the adhesive. These calibration labels frequently have text printed on them. Printed text is CALIBRATION NOT REQUIRED. NOTE: To help differentiate products from one another additional information and special features are noted below at the bottom of the Product Details list.