3-3/4" Bow Pencil Compass SKU - 405N Size - Made of durable steel construction for long-lasting use. 3-3/4" compass makes a maximum 3" circle and are delicately balanced, providing feather-light control. Precision-crafted instrument made of chrome-plated brass and fine tool steel. Delicately balanced, providing smooth movement. Tarnish and smudge-resistant finish.