badge, trade, American, US Navy Petty Officer Machinery Repairman rating badge
A white cotton twill irregular pentagon with square top and pointed bottom. Upon the white field is a dark blue embroidered eagle with outstretched wings looking to its right wing, 4.6cm in height. Below the eagle is a cog-wheel placed inside the jaws of a micrometer, the handle of which points to the right, as viewed.
The badge has no backing material.
Two-part ratings badges were issued as an economy measure; this allowed a petty officer, on promotion, to change the chevron element of the badge only, thus reducing wastage of the part of the badge with the specialty mark. The eagle and specialty mark were worn above any chevrons. The use of two-part ratings badges was short lived, they were only worn from 1945 to 1946.
This badge would have been worn, with chevrons, on the left arm between shoulder and elbow.