Heathkit Transistor Tester model IT-18

HEATHKIT MODEL IT18 IN CIRCUIT/OUT CIRCUIT TRANSISTOR TESTER SOLID STATE.

Heathkit IT-18 Transistor Tester Untested With Case

IT-18 Heathkit Transistor Tester Untested/Parts & Repair With Manual

Heathkit Assembly Manual for Model IT-18, copy

Heathkit 'Tri-Power' Supply model IP-2718, Assembly Manual, Cables & Schematics

Vintage Heathkit IT-121 FET / Transistor Tester

VINTAGE HEATHKIT ASSEMBLY MANUAL = In-Circuit / Out-of-Circuit Transistor Tester