The HUNTRON TRACKER® is a special type of CRT display and signal processing instrument that can be used to determine the quality of certain types of electronic components. Components are tested with a two terminal system of test leads that are placed across the component under test. The test leads are inserted into the TRACKER® front panel. The TRACKER® is used to test components in a power-off condition, and can be used to test components mounted on printed circuit boards or other in-circuit conditions even with components bridged by various types of resistive values. Devices that are normally tested by the TRACKER® include the following: semiconductor diodes, bipolar transistors, and field effect transistors; bipolar and MOS integrated circuits, including both analog and digital; certain types of capacitors and inductors. Included as standard equipment with each TRACKER® is a set of HUNTRON® MICRO PROBES™. The MICRO PROBE™ leads plug into the front panel test jacks. MICRO PROBES™ have special tips so that they can be used to contact very small component terminals and small PCB etchings without the danger of shorting adjacent terminals and leads. Also included as standard equipment is a common test lead which is used with the TRACKER® in the “Comparatrace” mode.