Hickok 600A Dynamic Mutual Conductance Tube Tester - RESTORED & WORKING

Description

This newly serviced Hickok 600A tube tester operates as designed and tests a variety of tubes. The unit was disassembled and thoroughly cleaned.  The capacitors were replaced, its rectifier tubes and the resistors were tested.  All contacts for controls, switches and pots were cleaned and lubricated.  The roller chart
(dated 1958)
mechanism was lubricated and works smooth and easy. The power cord was replaced with a new one. Tubes that were checked on this unit after servicing were also checked on a BK 700 and Jackson 648 with comparable results.
It also includes the operating instructions/parts manual as well as a spare roll chart, dated 1959.  The case is in very good structural  condition with some minor surface wear as can be seen.  Dimensions: 17x11x7".
This unit still has a lot of life in it for the foreseeable future.