Hickok 532 tube tester, fully serviced and calibrated. The case shows wear but the tester performs to factory specifications. This unit has been sold.
Restored and Calibrated Tube Testers.
Hickok 532 tube tester, fully serviced and calibrated. The case shows wear but the tester performs to factory specifications. This unit has been sold.
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.
Weston 981 mutual conductance tube tester, known for its robust construction and precise measurements. 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.
Precision 912P tube tester, fully restored and calibrated. The wood case is in excellent condition. This unit has been sold.
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.
Precision 10-12 tube tester, later model with improved circuitry. Wood case is in excellent condition. Fully restored and calibrated.