A bougie , for use in difficult or emergency situations allowing to be reliably positioned at a proper insertion depth into a patient, said bougie comprising: a body having a first end being blunted and a second end being blunted, at least one surface extending between the first and second ends, the body having an elongated shape that is sized and dimensioned to pass through a mouth and into a trachea of a patient , the body being constructed of a flexible and non-immunogenic material, wherein the first end and the second end are each adapted for passing into the mouth , past the larynx and into the trachea of the patient without causing trauma to the patient ; a first depth indicator on the body and spaced a first distance from the first end of the body and configured to indicate a first predetermined depth range such that when the first end of the body is inserted through the mouth and into the trachea of the patient, the first end is positioned a first predetermined insertion range past the mouth of the patient when the body is positioned with the first depth indicator aligned with the mouth, wherein the first predetermined depth range is sized for insertion into the mouth of a patient of a first predetermined age range; and a second depth indicator on the body and spaced a second distance from the second end of the body and configured to indicate a second predetermined depth range such that when the second end of the body is inserted through the mouth and into the trachea of the patient, the second end is positioned a second predetermined insertion range past the mouth of the patient when the body is positioned with the second depth indicator aligned with the mouth, wherein the second predetermined depth range is sized for insertion into the mouth of a patient of a second predetermined age range; and wherein the first predetermined depth range and the second predetermined depth range are different. a body having a first end being blunted and a second end being blunted, at least one surface extending between the first and second ends, the body having an elongated shape that is sized and dimensioned to pass through a mouth and into a trachea of a patient , the body being constructed of a flexible and non-immunogenic material, wherein the first end and the second end are each adapted for passing into the mouth , past the larynx and into the trachea of the patient without causing trauma to the patient ; a first depth indicator on the body and spaced a first distance from the first end of the body and configured to indicate a first predetermined depth range such that when the first end of the body is inserted through the mouth and into the trachea of the patient, the first end is positioned a first predetermined insertion range past the mouth of the patient when the body is positioned with the first depth indicator aligned with the mouth, wherein the first predetermined depth range is sized for insertion into the mouth of a patient of a first predetermined age range; and a second depth indicator on the body and spaced a second distance from the second end of the body and configured to indicate a second predetermined depth range such that when the second end of the body is inserted through the mouth and into the trachea of the patient, the second end is positioned a second predetermined insertion range past the mouth of the patient when the body is positioned with the second depth indicator aligned with the mouth, wherein the second predetermined depth range is sized for insertion into the mouth of a patient of a second predetermined age range; and wherein the first predetermined depth range and the second predetermined depth range are different. <EOS>