No person shall knowingly possess or have under his control any device, instrument, or article listed herein, with purpose to do any unlawful act: detached ignition switch; jumper wire device; key cutter; slidehammer; slim-jim; or any other device, instrument, or article commonly used, designed, or specially adapted for criminal use. City Code, 1976/83, art. 19, §9(a) Ord. 74-769 Ord. 85-378