IT-10 Transistor – Diode Checker The Heathkit IT-10 Transistor – Diode Checker is designed to check transistors for leakage and gain, and to check diodes for forward and reverse current. Due to the common use of transistors in radio and television sets, the serviceman is often called ON TO TEST TRANSISTORS IN THE HOME. This checker was designed with compactness in mind and uses a self-contained batter power supply for complete portability. The metal cabinet is constructed so that the checker may be placed in any position without the meter or switches touching the supporting surface. The compactness and light weight of this checker make it an ideal tool box instrument. SPECIFICATIONS Tests . . . . . . . . . . . . . . . . . . . . . . Transistors for: leakage gain, shorts, and opens Diodes for: forward and reverse current Switches . . . . . . . . . . . . . . . . . . . . . FOR - REV / PNP - NPN DIODE / HI - LO LEAKAGE - GAIN Power Supply . . . . . . . . . . . . . . . . . . . Self-contained, two 1-1/2 volt size C cells Net Weight . . . . . . . . . . . . . . . . . . . . 12 oz.