Hickok 600A tube tester, fully serviced and calibrated. The case is badly worn but the tester performs to factory specifications. This unit has been sold.
Hickok tube testers.
Hickok 600A tube tester, fully serviced and calibrated. The case is badly worn but the tester performs to factory specifications. This unit has been sold.
Hickok 534 tube tester with added plate current test points and bias fuse for enhanced diagnostics and circuit protection. Fully restored and calibrated.
Hickok 752A mutual conductance tube tester, reliable and accurate with a large analog meter. Fully restored and calibrated.
Hickok 539C tube tester upgraded with digital meters for improved readability while retaining original mutual conductance circuitry. Fully restored and calibrated.
Hickok 6000A tube tester with good cosmetic condition. Fully restored and calibrated for reliable tube testing.
Hickok 750 mutual conductance tube tester, known for accuracy and durability. Fully restored and calibrated with good cosmetics.