12 Brass Clock Hinges For Clock Repair. This is a new set of 12 brass clock hinges. Great for clock repair. Each measures approximately 9/16" x 1/2" (14 x 13 mm). We work hard to update our descriptions and pictures of our merchandise. As part of a process of ongoing innovation by our suppliers, newer versions of the item shown may be shipped before we are able to complete an update. As a result there may be a slight variation in color and design.