Upfor sale we have a great CD that I have designed from the original TubeChart and Owner\'s Manual, The B&K 707 Dyna-Jet Tube Chart and Owner\'s Manual is now on CD, no more fighting withthose Old torn up fragile books, I have put it all in PDF format, which is 23pages long with the Chart, and 12 pages with the Manual, now it is much easier to look at your PC monitor while scanningthrough the pages of your owner manual learning all about your tube tester, or your tube Chart to test all of those vintage tubes, I promise you willLove it, this is a great CD that will benefit you for the rest of your life,Satisfaction Guaranteed or your money back, Happy offerdingand Good Luck,,,,