Navy E-4/5/6 Machinist's Mate Rating Badges ISLAND_8C~MCR-68101 or other construction units

or other construction units

and other personnel whose duties bring them in direct and frequent contact with the Secretary of Defense

The Female Shoulder Boards is 1 5/8 inches wide and 3 1/2 inches long

United States Air Force Commander's Insignia Badge

Navy E-4/5/6 Machinist's Mate Rating Badges ISLAND_8C~MCR-68101 or other construction unitsUnited States Navy E 4 5 6 Machinist's Mate Rating Badge Criteria: Worn by Machinist's Mates (MM) with ranks from Petty Officer 3rd Class (E 4) to Petty Officer 1st Class (E 6). Machinist's Mates are typically responsible for the continuous operation of the engines, compressors, refrigeration and air conditioning equipment aboard the USN's vessels and at their land based installations. Some Machinist's Mates are also trained in Health Physics and