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2,086 results in Business & Industrial

RARE - Knight 400A Tube Tester - Near Mint Condition - And It Works!!! Used
Tube Testers

RARE - Knight 400A Tube Tester - Near Mint Condition - And It Works!!!

USD $199.00

Seller: 100.0% positive

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Weston Model 774 TYPE 4 VALVE TUBE TESTER ANALYSER Used
Tube Testers

Weston Model 774 TYPE 4 VALVE TUBE TESTER ANALYSER

USD $349.89

Seller: 99.2% positive

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AceAxis A Advanced Radio Tester Used
Tube Testers

AceAxis A Advanced Radio Tester

USD $339.99

Seller: 99.3% positive

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Vintage Hickok Dynamic Beta Model- 870 Transistor Tester Dynamic Used
Tube Testers

Vintage Hickok Dynamic Beta Model- 870 Transistor Tester Dynamic

USD $239.99

Seller: 100.0% positive

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Hickok 539C Tube Tester – Restored – Meter Upgrades – Free Ship CONUS (b41) Seller refurbished
Tube Testers

Hickok 539C Tube Tester – Restored – Meter Upgrades – Free Ship CONUS (b41)

USD $1,695.00

Seller: 100.0% positive

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Tube Tester Hickok TV-7/U with original manual Used
Tube Testers

Tube Tester Hickok TV-7/U with original manual

USD $620.00

Seller: 100.0% positive

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Excellent Triplett 3444 Mutual Conductance Tube Tester - Calibrated Seller refurbished
Tube Testers

Excellent Triplett 3444 Mutual Conductance Tube Tester - Calibrated

USD $1,895.00

Seller: 100.0% positive

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Digital vacuum tube tester KIT, Duokit 3 with the front panel New
Tube Testers

Digital vacuum tube tester KIT, Duokit 3 with the front panel

USD $350.00

Seller: 100.0% positive

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TV-7 B/U Military Tube Tester Mint Condition refurbished/calibrated Dec 2025 Used
Tube Testers

TV-7 B/U Military Tube Tester Mint Condition refurbished/calibrated Dec 2025

USD $1,299.99

Seller: 100.0% positive

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Introducing the Hollowstate Devices TV-7 METER√CHK - Checks the TV-7 Meter! New
Tube Testers

Introducing the Hollowstate Devices TV-7 METER√CHK - Checks the TV-7 Meter!

USD $149.95

Seller: 100.0% positive

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TV-7 TV-7A/U TV-7B/U TV-7C/U TV-7D/U tube tester meter (replica) NEW New – Open box
Tube Testers

TV-7 TV-7A/U TV-7B/U TV-7C/U TV-7D/U tube tester meter (replica) NEW

USD $60.00

Seller: 100.0% positive

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ANTQ JEWELL ELECTRIC TUBE TESTER SYLVANIA Z8Z9 Used
Tube Testers

ANTQ JEWELL ELECTRIC TUBE TESTER SYLVANIA Z8Z9

USD $277.00

Seller: 99.4% positive

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Accurate Instrument Model 157 Tube Tester Manual New – Open box
Tube Testers

Accurate Instrument Model 157 Tube Tester Manual

USD $14.99

Seller: 99.9% positive

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Beltron Picture Tube Restoring System CRT Tester 8257 Powers On + Docs Certified Used
Tube Testers

Beltron Picture Tube Restoring System CRT Tester 8257 Powers On + Docs Certified

USD $250.00

Seller: 99.6% positive

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Vintage B&K Dyna-Jet Dynascan 747 Mutual Conductance Tube Tester Checker #1 Used
Tube Testers

Vintage B&K Dyna-Jet Dynascan 747 Mutual Conductance Tube Tester Checker #1

USD $300.00

Seller: 100.0% positive

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HEATHKIT IT-21 Tube Tester Working! Tested! Clean! Good Condition! (1961/67) Seller refurbished
Tube Testers

HEATHKIT IT-21 Tube Tester Working! Tested! Clean! Good Condition! (1961/67)

USD $169.99

Seller: 99.8% positive

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TV-7 Series Tube Tester - Calibration Tube Set - TV7 TV-7-D/U TV-7 - Bogie Tubes Used
Tube Testers

TV-7 Series Tube Tester - Calibration Tube Set - TV7 TV-7-D/U TV-7 - Bogie Tubes

USD $77.99

Seller: 100.0% positive

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Antique Weston Model 682 Tube Tester For parts or not working
Tube Testers

Antique Weston Model 682 Tube Tester

USD $34.97

Seller: 99.8% positive

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Vacuum Tube Tester New
Tube Testers

Vacuum Tube Tester

USD $319.00

Seller: 100.0% positive

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Vintage Weston 506 DayRad Type B Radio Tube Checker Vacuum Tube Tester Petite For parts or not working
Tube Testers

Vintage Weston 506 DayRad Type B Radio Tube Checker Vacuum Tube Tester Petite

USD $49.00

Seller: 99.6% positive

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Hickok 539B Tube Tester Used
Tube Testers

Hickok 539B Tube Tester

USD $850.00

Seller: 100.0% positive

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B&K DYNA-QUIK 700 Tube Tester Manual with Tube Data and Supplements New
Tube Testers

B&K DYNA-QUIK 700 Tube Tester Manual with Tube Data and Supplements

USD $17.99

Seller: 99.9% positive

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Tube Tester Metal 6L6 Calibration Bogie Tube in umhos for Hickok, Heathkit, etc Used
Tube Testers

Tube Tester Metal 6L6 Calibration Bogie Tube in umhos for Hickok, Heathkit, etc

USD $46.99

Seller: 100.0% positive

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Vintage Self Service Tube Tester Store Display Cabinet Used
Tube Testers

Vintage Self Service Tube Tester Store Display Cabinet

USD $250.00

Seller: 100.0% positive

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Vintage Mercury Model 1100A Tube Tester - for parts or restore only ! For parts or not working
Tube Testers

Vintage Mercury Model 1100A Tube Tester - for parts or restore only !

USD $45.00

Seller: 99.7% positive

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B&K DYNA-QUIK 650 Tube and Transistor Tester Manual with Tube Data New – Open box
Tube Testers

B&K DYNA-QUIK 650 Tube and Transistor Tester Manual with Tube Data

USD $16.99

Seller: 99.9% positive

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Hickok 539C Direct-reading Transconductance Vacuum Tube Tester Used
Tube Testers

Hickok 539C Direct-reading Transconductance Vacuum Tube Tester

USD $1,700.00

Seller: 100.0% positive

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Vintage SUPREME RADIO DIAGNOMETER Tube Tester Model 400-B w/ Case & Accessories For parts or not working
Tube Testers

Vintage SUPREME RADIO DIAGNOMETER Tube Tester Model 400-B w/ Case & Accessories

USD $84.99

Seller: 99.7% positive

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B&K DYNA-JET 606 Tube Tester Manual with Tube Data New
Tube Testers

B&K DYNA-JET 606 Tube Tester Manual with Tube Data

USD $12.99

Seller: 99.9% positive

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Conar Model 221 223 224 Tube Test Data Book 1978 Version New
Tube Testers

Conar Model 221 223 224 Tube Test Data Book 1978 Version

USD $13.99

Seller: 99.9% positive

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Test Lead for HICKOK Commercial Tube Testers New
Tube Testers

Test Lead for HICKOK Commercial Tube Testers

USD $10.95

Seller: 100.0% positive

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B&K 707 VACUUM TUBE TESTER DYNA-JET PARTS OR REPAIR (NO POWER) For parts or not working
Tube Testers

B&K 707 VACUUM TUBE TESTER DYNA-JET PARTS OR REPAIR (NO POWER)

USD $179.95

Seller: 99.9% positive

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Lafayette Accurate Instruments Model 157 Vacuum Tube Tester Tested Working Used
Tube Testers

Lafayette Accurate Instruments Model 157 Vacuum Tube Tester Tested Working

USD $125.00

Seller: 100.0% positive

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TV-7 D/U Military Tube Tester Excellent Condition refurbished/calibrated Dec '25 Used
Tube Testers

TV-7 D/U Military Tube Tester Excellent Condition refurbished/calibrated Dec '25

USD $1,399.99

Seller: 100.0% positive

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1970 Tube Test Data for Hickok 539B and 539C Tube Testers New
Tube Testers

1970 Tube Test Data for Hickok 539B and 539C Tube Testers

USD $13.99

Seller: 99.9% positive

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Weston 981 type 3A Tube Tester Manual New
Tube Testers

Weston 981 type 3A Tube Tester Manual

USD $12.99

Seller: 99.9% positive

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Century Electronics FC-2 Tube Tester Manual New
Tube Testers

Century Electronics FC-2 Tube Tester Manual

USD $12.99

Seller: 99.9% positive

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VINTAGE Supreme Model 504-A Vacuum Tube Tester for parts or repair For parts or not working
Tube Testers

VINTAGE Supreme Model 504-A Vacuum Tube Tester for parts or repair

USD $34.99

Seller: 99.7% positive

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Tri Electronics G-XL-18 Digital Gold Tester with Box Machine And Test Leeds Used
Tube Testers

Tri Electronics G-XL-18 Digital Gold Tester with Box Machine And Test Leeds

USD $400.00

Seller: 0.0% positive

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APCO COIL AND CONDENSER TESTER AS IS FOR PARTS UNTESTED For parts or not working
Tube Testers

APCO COIL AND CONDENSER TESTER AS IS FOR PARTS UNTESTED

USD $159.99

Seller: 99.9% positive

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Precision Tube Test Data for 910 912 914 915 920 922 954 Tube Testers New – Open box
Tube Testers

Precision Tube Test Data for 910 912 914 915 920 922 954 Tube Testers

USD $12.99

Seller: 99.9% positive

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Precision Supplementary Tube Test Data MRC(GK) for 10-12, 15, 20, 22, 54 New
Tube Testers

Precision Supplementary Tube Test Data MRC(GK) for 10-12, 15, 20, 22, 54

USD $12.99

Seller: 99.9% positive

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Dual Bias Current Probes Tester+Analog VU Meter for EL34 KT88 6L6 6V6 6550 KT66 New
Tube Testers

Dual Bias Current Probes Tester+Analog VU Meter for EL34 KT88 6L6 6V6 6550 KT66

USD $59.99

Seller: 99.5% positive

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Heathkit CRT Tester and Rejuvenator Model IT-5230 Powers On Untested Used
Tube Testers

Heathkit CRT Tester and Rejuvenator Model IT-5230 Powers On Untested

USD $80.39

Seller: 99.7% positive

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Triplett 3490A Vintage Transistor Analyzer Tester (really nice) Used
Tube Testers

Triplett 3490A Vintage Transistor Analyzer Tester (really nice)

USD $500.00

Seller: 100.0% positive

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Hickok AN/USM-118A Cardmatic Manual NAVSHIPS 93883 New – Open box
Tube Testers

Hickok AN/USM-118A Cardmatic Manual NAVSHIPS 93883

USD $14.99

Seller: 99.9% positive

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Vintage Heathkit IT-17 Tube Checker Filament Continuity HiFi Audio Repair Gear Used
Tube Testers

Vintage Heathkit IT-17 Tube Checker Filament Continuity HiFi Audio Repair Gear

USD $329.99

Seller: 99.9% positive

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HICKOK 539C TUBE TESTER LATE MODEL S/N 523-00149 ORIGINAL LINE METER AJUSTMENT Used
Tube Testers

HICKOK 539C TUBE TESTER LATE MODEL S/N 523-00149 ORIGINAL LINE METER AJUSTMENT

USD $249.99

Seller: 100.0% positive

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