ALL THE essential information you need packed into one instant reference source. 
Fact, formulas,techniques,wiring codes, identification characteristics, abbreviations,
symbols, circuits and charts-in short, the kind of practical, down-to-earth data that
can help you solve tough problems fast. 
Pictures of actual book you will receive, dust jacket torn/worn but book is clean, binding good, 
no loose pages. A wealth of information at your fingertips.