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It may be a no-go on that tester if you don't have the book...you need that to tell what the settings are on the controls for each particular tube...I have not heard of Accurate Instrument co. myself.
You may need to just go for another tester making sure it has the literature with it, otherwise you will only get possibly false test results or risk burning out tubes due to wrong filament voltage. Some testers have the settings on a scroll mounted inside the tester and others have a little booklet you have to consult.
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