Hickok Incorporated. The Group develops and manufactures precision indicating instruments, which are used in aircraft, locomotives and other applications. It also designs and markets instruments to diagnose automotive electronics systems. The Group's products and services are provided to the automotive, aircraft and locomotive with sales to both original equipment manufacturers (OEMs) and to the automotive aftermarket in North America. Diagnostic Tools and Equipment accounted for 85% of fiscal 2002 revenues and Indicators and Gauges, 15%.