This is a bound printed documentations set for the Commercial Trades Institute TC-20 emission tube tester. This documentation set will help you assemble, maintain, repair and use your TC-20 tube tester.Included are the following:

• New copy of the TC-20 Final Wiring Manual (Assignment 8)
• Schematic
• Answers to review questions for Assignment 8
• Three test data tube charts
  

Most of the TC-20s I\'ve seen are not built exactly like the schematic, so both original and as-built schematics are included. This manual is nicely bound with oversize clear plastic and hard back covers.If you haven\'t gotten around to putting together your TC-20 and lost your instructions, or if you have a TC-20 but don\'t know how to use it or fix it, this is what you need. :)PLEASE NOTE: As you can see in the pictures, the type font is pretty small. The smallest lettering are some notes in the chart that are about a 5 point font. Much of the data charts are in 6 point font. This is because the original was reduced to 8.5\" x 11\" from 8.5\" x 14\". My eyesight is terrible but I have a great optometrist. I don\'t have any trouble reading these charts with my glasses on. If you can\'t read small font without reading glasses, you will need to wear your glasses to use this bookPlease let me know if you have any questions.

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