Vintage 3 ring blue book titled ZENITH TECHNICAL TRAINING. Multiple pictures, schematics and instructions on how to repair vintage Zenith televisions and VCRs. Nice used condition. Multiple editions as pictured and stated in the title. Please see pictures for best description. Looks like these are mostly from the 1970's and early 1980's. Book measures aprox 10" length x 1 1/2" thick x 11 3/4" height. Pack/ship USPS Media is $14.95. Sold as is and final sale. No returns. Thanks for looking.