An apparatus and method are provided for detaching a die from an adhesive film, the apparatus comprising a vacuum platform having a surface configured to support a part of the adhesive film on which the die is attached. The game calling holder may appropriately include an elastic sleeve sized to elastically conform to the game calling unit configuration and a badge pin which retains the elastic sleeve and game calling unit in longitudinal alignment with the badge pin alignment when mounted onto a hunter’s garment at a predetermined aiming mount position. The ohmic contact layer is formed by adding an additional element to an indium oxide. Since the laser beam goes through the inside of the GIS switch, there is a small error in the detection result, which thus can reflect a real state inside the GIS switch.