A template for locating a proper place for inserting a needle. The template has two reference indicators that are placed on a persons body and an elongated body, with incremental markings on each side of the elongated body, that moves relative to the two reference indicators. The incremental markings on each side of the elongated body can be scaled differently. One reference indicator is placed over the clavicle and the other is placed over the nipple on the same lateral side. The elongated body is moved until the reference indicators are each lined up with equivalent incremental markings on each half of the elongated body. When the reference indicators are lined up with matching incremental markings, a fixed target, positioned between the two sets of incremental markings, will indicate a proper location for inserting a pneumothorax relief needle.
