9 Brass Clock Spandrel Column Holders Dial Corners Parts 4 New Mantle Clock Column Holders. This is a new set of 4 brass mantle clock column holders. These are used in clock repair. Each measures approximately 3/4" x 13/16" x 3/8" (19 x 20 x10 mm). Clock Spandrel. This is a new cast brass clock spandrel with face. It is used on clock dials. Measures approximately 2 1/16" x 3 7/16" (52 x 87 mm) 4 New Clock Spandrels. This is a new set of 4 antique finish clock spandrels. These are used on clock dials. Each measures approximately 2 1/4" x 3 3/16" (56 x 80 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.