Jewelers Tools Horn Anvil On Base Jewelry Silversmith. Double Horn Anvil. This is a new double horn anvil. Great for metalsmiths, riveting, flattening, forging and forming metal. Has a round and flat horn. Mounted on a sturdy base. The base measures approximately 2 9/16" (65 mm) in diameter. The anvil measures approximately 4 1/2" x 13/16" (114.3 x 21 mm). T-Shaped Anvil. This is a new t-shaped anvil. Used for flattening and shaping. Has flat and round horns. It measures approximately 4 1/8" (105 mm) from tip to tip and measures about 4 1/4" (108 mm) tall.