We have a great CD that I have designed from the original Tube Chart and Owner's Manual, The B&K 707 Dyna-Jet Tube Chart and Owner's Manual is now on CD, no more fighting with those Old torn up fragile books, I have put it all in PDF format, which is 23 pages long with the Chart, and 12 pages with the Manual, now it is much easier to look at your PC monitor while scanning through 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 will Love it, this is a great CD that will benefit you for the rest of your life, Satisfaction Guaranteed or your money back, this include your shipping cost, We are talking about a complete refund, so you have nothing to lose, I Except Paypal Only,,,