EICO 666 Tube Tester Instruction & Construction Manual + Charts, Supplements

Description

MORE FOR LESS... Large collection of EICO 666 documentation in one manual set.  Many sections include:
666 Instruction Manual
Corrections to Original Roll Chart
Transistor Test Data Sheet
Construction Manual
Large 11x17 Fold-out Schematic
1978 Coletronics tube chart (latest known for the 666)
666-05 Tube Chart Addenda
666-05 Tube Chart Supplement
EICO Inter-changeability Chart
666-016 Tube Chart Supplement
EICO Service Policy
Comb-bound with clear front and thick back oversize covers
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Sections are well organized and easy to find.  This manual set has the tube chart data you will need to test some less common tubes.  The original 666 roll chart was littered with errors.  These were mostly corrected by Coletronics in their 1978 test data chart.  But even that Coletronics chart had some silly mistakes.  For example, many 6.3V Loctal tubes had a 7.5 filament voltage setting in their charts.  The included supplement gives you the correct settings for those tubes.
Also, old UX tubes (e.g., 26, 27, etc.) are not in the Coletronics book.  This manual set includes all of those important antique tubes.  If you own a 666, you should expect to get test data settings for the antique tubes.